Saison des fumées, mois par mois dans le monde
Champs ou forêts en feu ; le problème, c’est l’air, pas la météo.
Cette page est un avertissement, pas une recommandation. Saison des fumées concerne 115 destinations sur SeasonMap ; les mois ci-dessous sont ceux où la période de risque est ouverte — la plupart des semaines passent sans histoire, et le score affiché à côté de chaque lieu reste le score climatique habituel, risque compris.
Quand ça a lieu
Saison des fumées en janvier
- Hobart 🇦🇺 AustralieBushfire season · 1 déc. – 15 mars (en général)A dry spell in the highlands can put smoke over the Derwent for days and close the walking tracks around the city.96
- Valparaíso 🇨🇱 ChiliFire season in the hills · 15 déc. – 15 avr. (en général)The ravines behind the port dry out over summer and fires have run through the upper hills more than once, the worst of them destroying whole cerros.94
- Margaret River 🇦🇺 AustralieBushfire and burn-off season · 15 nov. – 15 avr. (en général)Summer brings total fire bans and closed forest tracks, and the autumn prescribed burns put smoke through the valleys on still days.93
- Île Kangourou 🇦🇺 AustralieFire danger season closures · 15 nov. – 15 avr. (en général)National parks here close on catastrophic fire danger days, which lands squarely in the summer holidays.93
- Melbourne 🇦🇺 AustralieBushfire season · 1 déc. – 15 mars (en général)The risk in the country around the city peaks after midsummer, and a bad day closes the roads and fills the basin with smoke.86
- Le Cap 🇿🇦 Afrique du SudMountain fire season · 1 nov. – 15 mai (en général)The fynbos burns most summers, and a bad day closes hiking paths, the cableway and sometimes a suburb's roads.86
- Sydney 🇦🇺 AustralieBushfire smoke risk · 1 nov. – 28 févr. (en général)Fires inland or on the coast can put smoke over the city for days in a bad summer; the fire service publishes a danger rating for the Sydney region daily.82
- Perth 🇦🇺 AustralieBushfire season · 15 nov. – 15 avr. (en général)Fires in the hills east of the city put smoke over the suburbs on still days and close the walking trails on the worst ones.82
- San Carlos de Bariloche 🇦🇷 ArgentinePatagonian fire season · 1 déc. – 31 mars (en général)Nahuel Huapi runs a fire risk level through the dry summer and closes trails, campsites and whole valleys when it peaks.80
- Delhi 🇮🇳 IndeSevere air season · 1 oct. – 31 janv. (en général)Emergency pollution restrictions run from 1 October: construction bans, diesel-vehicle limits and schools moved online when it escalates.80
- Katoomba 🇦🇺 AustralieBushfire season · 1 oct. – 1 mars (en général)The whole town sits inside the national park, so a bad fire week means smoke, closed tracks and, on the worst days, a closed highway.80
- Ayutthaya 🇹🇭 ThaïlandeCentral plains burning haze · 20 janv. – 15 avr. (en général)Cane and stubble fires around the central provinces put a flat grey ceiling over the island for weeks.78
- Katmandou 🇳🇵 NépalValley smog season · 15 nov. – 28 févr. (en général)Cold air sits in the bowl of the valley and holds in kiln smoke, vehicle exhaust and field burning from the plains.76
- Bangkok 🇹🇭 ThaïlandeUpcountry burning haze · 25 janv. – 15 avr. (en général)Agricultural fires north and west of the city put a lid of smoke over Bangkok through the late dry season.73
- Salt Lake City 🇺🇸 États-UnisWinter inversion · 15 déc. – 20 févr. (en général)Cold air settles in the valley under a lid of warm air and the exhaust has nowhere to go, sometimes for a fortnight.51
- Almaty 🇰🇿 KazakhstanWinter smog · 15 nov. – 1 mars (en général)Coal heating and a valley inversion pin the smoke over the city for weeks at a time once the cold sets in.39
- Oulan-Bator 🇲🇳 MongolieWinter smog · 1 nov. – 31 marsRaw coal burned in the ger districts for heating, held down over the valley by an inversion, makes this one of the worst urban airs anywhere between November and March.32
Saison des fumées en février
- Hobart 🇦🇺 AustralieBushfire season · 1 déc. – 15 mars (en général)A dry spell in the highlands can put smoke over the Derwent for days and close the walking tracks around the city.95
- Île Kangourou 🇦🇺 AustralieFire danger season closures · 15 nov. – 15 avr. (en général)National parks here close on catastrophic fire danger days, which lands squarely in the summer holidays.95
- Margaret River 🇦🇺 AustralieBushfire and burn-off season · 15 nov. – 15 avr. (en général)Summer brings total fire bans and closed forest tracks, and the autumn prescribed burns put smoke through the valleys on still days.94
- Valparaíso 🇨🇱 ChiliFire season in the hills · 15 déc. – 15 avr. (en général)The ravines behind the port dry out over summer and fires have run through the upper hills more than once, the worst of them destroying whole cerros.93
- Melbourne 🇦🇺 AustralieBushfire season · 1 déc. – 15 mars (en général)The risk in the country around the city peaks after midsummer, and a bad day closes the roads and fills the basin with smoke.92
- Kalaw 🇲🇲 BirmanieBurning season haze · 15 févr. – 30 avr. (en général)Hillsides around the town are burned off before the rains and the smoke sits in the valleys below the ridge.90
- Le Cap 🇿🇦 Afrique du SudMountain fire season · 1 nov. – 15 mai (en général)The fynbos burns most summers, and a bad day closes hiking paths, the cableway and sometimes a suburb's roads.88
- Lac Inle 🇲🇲 BirmanieBurning season haze · 15 févr. – 30 avr. (en général)The Shan uplands are burned off before the rains and the smoke settles into the basin the lake sits in.86
- Katmandou 🇳🇵 NépalValley smog season · 15 nov. – 28 févr. (en général)Cold air sits in the bowl of the valley and holds in kiln smoke, vehicle exhaust and field burning from the plains.85
- Chiang Rai 🇹🇭 ThaïlandeBurning season · 1 févr. – 20 avr. (en général)Field and forest fires in the valleys and across the border put Chiang Rai near the top of the world's air-quality charts most Marches.84
- Thibaw 🇲🇲 BirmanieBurning season haze · 15 févr. – 30 avr. (en général)Fields and hillsides across the Shan uplands are burned off before the rains and the smoke sits in the valleys for weeks.84
- Chiang Mai 🇹🇭 ThaïlandeBurning season · 1 févr. – 20 avr. (en général)Field and forest fires fill the valley with smoke that the surrounding hills hold in place, and the city regularly tops the world's live pollution rankings in March.82
- Perth 🇦🇺 AustralieBushfire season · 15 nov. – 15 avr. (en général)Fires in the hills east of the city put smoke over the suburbs on still days and close the walking trails on the worst ones.82
- Katoomba 🇦🇺 AustralieBushfire season · 1 oct. – 1 mars (en général)The whole town sits inside the national park, so a bad fire week means smoke, closed tracks and, on the worst days, a closed highway.82
- San Carlos de Bariloche 🇦🇷 ArgentinePatagonian fire season · 1 déc. – 31 mars (en général)Nahuel Huapi runs a fire risk level through the dry summer and closes trails, campsites and whole valleys when it peaks.81
- Pai 🇹🇭 ThaïlandeBurning season · 1 févr. – 20 avr. (en général)Mae Hong Son province takes the worst of the northern smoke and the valley traps it.81
- Vientiane 🇱🇦 LaosBurning season haze · 15 févr. – 30 avr. (en général)Field and forest fires across northern Laos fill the valley with smoke and the far bank of the Mekong disappears for weeks.81
- Paksé 🇱🇦 LaosBurning season haze · 15 févr. – 30 avr. (en général)Field clearing across southern Laos and over the Thai border fills the Mekong valley with smoke for weeks, and the view from the plateau edge disappears with it.81
- Sydney 🇦🇺 AustralieBushfire smoke risk · 1 nov. – 28 févr. (en général)Fires inland or on the coast can put smoke over the city for days in a bad summer; the fire service publishes a danger rating for the Sydney region daily.80
- Vang Vieng 🇱🇦 LaosBurning season haze · 15 févr. – 25 avr. (en général)The karst towers are the reason to stop here and for these weeks they are outlines in smoke from the fields burning up and down the valley.79
- Saïpan 🇲🇵 Îles Mariannes du NordDry-season brush fires · 1 févr. – 31 mai (en général)The grass hillsides above Kagman and out towards Marpi burn most dry seasons, largely from deliberate fires, and the smoke hangs under the trade wind on still mornings.76
- Ayutthaya 🇹🇭 ThaïlandeCentral plains burning haze · 20 janv. – 15 avr. (en général)Cane and stubble fires around the central provinces put a flat grey ceiling over the island for weeks.72
- Bangkok 🇹🇭 ThaïlandeUpcountry burning haze · 25 janv. – 15 avr. (en général)Agricultural fires north and west of the city put a lid of smoke over Bangkok through the late dry season.69
- Kanchanaburi 🇹🇭 ThaïlandeBurning season haze · 1 févr. – 15 avr. (en général)Field and forest fires along the western hills and over the Myanmar border grey out the valley for weeks.69
- Salt Lake City 🇺🇸 États-UnisWinter inversion · 15 déc. – 20 févr. (en général)Cold air settles in the valley under a lid of warm air and the exhaust has nowhere to go, sometimes for a fortnight.61
…et 2 de plus en février.
Saison des fumées en mars
- Île Kangourou 🇦🇺 AustralieFire danger season closures · 15 nov. – 15 avr. (en général)National parks here close on catastrophic fire danger days, which lands squarely in the summer holidays.97
- Melbourne 🇦🇺 AustralieBushfire season · 1 déc. – 15 mars (en général)The risk in the country around the city peaks after midsummer, and a bad day closes the roads and fills the basin with smoke.93
- Valparaíso 🇨🇱 ChiliFire season in the hills · 15 déc. – 15 avr. (en général)The ravines behind the port dry out over summer and fires have run through the upper hills more than once, the worst of them destroying whole cerros.92
- Margaret River 🇦🇺 AustralieBushfire and burn-off season · 15 nov. – 15 avr. (en général)Summer brings total fire bans and closed forest tracks, and the autumn prescribed burns put smoke through the valleys on still days.92
- Mexico 🇲🇽 MexiqueOzone alert season · 1 mars – 31 maiStill, sunny, rainless weeks in the basin cook the traffic exhaust into ozone, and the city declares contingencies that pull cars off the road.90
- Le Cap 🇿🇦 Afrique du SudMountain fire season · 1 nov. – 15 mai (en général)The fynbos burns most summers, and a bad day closes hiking paths, the cableway and sometimes a suburb's roads.90
- Hobart 🇦🇺 AustralieBushfire season · 1 déc. – 15 mars (en général)A dry spell in the highlands can put smoke over the Derwent for days and close the walking tracks around the city.90
- Perth 🇦🇺 AustralieBushfire season · 15 nov. – 15 avr. (en général)Fires in the hills east of the city put smoke over the suburbs on still days and close the walking trails on the worst ones.85
- Kalaw 🇲🇲 BirmanieBurning season haze · 15 févr. – 30 avr. (en général)Hillsides around the town are burned off before the rains and the smoke sits in the valleys below the ridge.84
- Jinghong 🇨🇳 ChineBurning season haze · 1 mars – 20 avr. (en général)Field burning across the border in Myanmar and Laos drifts up the Mekong valley through the last dry weeks.81
- Lac Inle 🇲🇲 BirmanieBurning season haze · 15 févr. – 30 avr. (en général)The Shan uplands are burned off before the rains and the smoke settles into the basin the lake sits in.80
- Thibaw 🇲🇲 BirmanieBurning season haze · 15 févr. – 30 avr. (en général)Fields and hillsides across the Shan uplands are burned off before the rains and the smoke sits in the valleys for weeks.76
- San Carlos de Bariloche 🇦🇷 ArgentinePatagonian fire season · 1 déc. – 31 mars (en général)Nahuel Huapi runs a fire risk level through the dry summer and closes trails, campsites and whole valleys when it peaks.74
- Saïpan 🇲🇵 Îles Mariannes du NordDry-season brush fires · 1 févr. – 31 mai (en général)The grass hillsides above Kagman and out towards Marpi burn most dry seasons, largely from deliberate fires, and the smoke hangs under the trade wind on still mornings.74
- Chiang Rai 🇹🇭 ThaïlandeBurning season · 1 févr. – 20 avr. (en général)Field and forest fires in the valleys and across the border put Chiang Rai near the top of the world's air-quality charts most Marches.74
- Pai 🇹🇭 ThaïlandeBurning season · 1 févr. – 20 avr. (en général)Mae Hong Son province takes the worst of the northern smoke and the valley traps it.72
- Paksé 🇱🇦 LaosBurning season haze · 15 févr. – 30 avr. (en général)Field clearing across southern Laos and over the Thai border fills the Mekong valley with smoke for weeks, and the view from the plateau edge disappears with it.72
- Katoomba 🇦🇺 AustralieBushfire season · 1 oct. – 1 mars (en général)The whole town sits inside the national park, so a bad fire week means smoke, closed tracks and, on the worst days, a closed highway.72
- Gangneung 🇰🇷 Corée du SudSpring wildfire weeks · 1 mars – 30 avr. (en général)The east-coast strip burns most springs, when a dry wind comes over the ridge and drives a fire down to the sea in hours.72
- Louang Namtha 🇱🇦 LaosBurning season haze · 1 mars – 25 avr. (en général)Northern Laos burns its fields and hillsides before the rains and this valley holds the smoke.72
- Nong Khiaw 🇱🇦 LaosBurning season haze · 1 mars – 25 avr. (en général)The viewpoints above the river are the entire reason to stop here, and for these weeks they look out on a wall of smoke from the fields burning across northern Laos.72
- Sokcho 🇰🇷 Corée du SudSpring wildfire season · 1 mars – 30 avr. (en général)Dry air and the hot downslope wind off the Taebaek range make March and April Gangwon's fire season.71
- Luang Prabang 🇱🇦 LaosBurning season haze · 1 mars – 30 avr. (en général)Agricultural burning across northern Laos and the region fills the valley with smoke for weeks; the hills disappear and flights are occasionally diverted.70
- Vientiane 🇱🇦 LaosBurning season haze · 15 févr. – 30 avr. (en général)Field and forest fires across northern Laos fill the valley with smoke and the far bank of the Mekong disappears for weeks.70
- Vang Vieng 🇱🇦 LaosBurning season haze · 15 févr. – 25 avr. (en général)The karst towers are the reason to stop here and for these weeks they are outlines in smoke from the fields burning up and down the valley.69
…et 6 de plus en mars.
Saison des fumées en avril
- Le Cap 🇿🇦 Afrique du SudMountain fire season · 1 nov. – 15 mai (en général)The fynbos burns most summers, and a bad day closes hiking paths, the cableway and sometimes a suburb's roads.93
- Perth 🇦🇺 AustralieBushfire season · 15 nov. – 15 avr. (en général)Fires in the hills east of the city put smoke over the suburbs on still days and close the walking trails on the worst ones.92
- Île Kangourou 🇦🇺 AustralieFire danger season closures · 15 nov. – 15 avr. (en général)National parks here close on catastrophic fire danger days, which lands squarely in the summer holidays.89
- Mexico 🇲🇽 MexiqueOzone alert season · 1 mars – 31 maiStill, sunny, rainless weeks in the basin cook the traffic exhaust into ozone, and the city declares contingencies that pull cars off the road.88
- Valparaíso 🇨🇱 ChiliFire season in the hills · 15 déc. – 15 avr. (en général)The ravines behind the port dry out over summer and fires have run through the upper hills more than once, the worst of them destroying whole cerros.88
- Margaret River 🇦🇺 AustralieBushfire and burn-off season · 15 nov. – 15 avr. (en général)Summer brings total fire bans and closed forest tracks, and the autumn prescribed burns put smoke through the valleys on still days.85
- Gangneung 🇰🇷 Corée du SudSpring wildfire weeks · 1 mars – 30 avr. (en général)The east-coast strip burns most springs, when a dry wind comes over the ridge and drives a fire down to the sea in hours.85
- Sokcho 🇰🇷 Corée du SudSpring wildfire season · 1 mars – 30 avr. (en général)Dry air and the hot downslope wind off the Taebaek range make March and April Gangwon's fire season.82
- Kalaw 🇲🇲 BirmanieBurning season haze · 15 févr. – 30 avr. (en général)Hillsides around the town are burned off before the rains and the smoke sits in the valleys below the ridge.77
- Saïpan 🇲🇵 Îles Mariannes du NordDry-season brush fires · 1 févr. – 31 mai (en général)The grass hillsides above Kagman and out towards Marpi burn most dry seasons, largely from deliberate fires, and the smoke hangs under the trade wind on still mornings.72
- Lac Inle 🇲🇲 BirmanieBurning season haze · 15 févr. – 30 avr. (en général)The Shan uplands are burned off before the rains and the smoke settles into the basin the lake sits in.72
- Tchita 🇷🇺 RussieSpring wildfire smoke · 1 avr. – 10 juin (en général)Dry, windy springs set off forest and grass fires across Zabaykalye almost every year; smoke can sit over the city and fire bans close forest areas.69
- Jinghong 🇨🇳 ChineBurning season haze · 1 mars – 20 avr. (en général)Field burning across the border in Myanmar and Laos drifts up the Mekong valley through the last dry weeks.68
- Thibaw 🇲🇲 BirmanieBurning season haze · 15 févr. – 30 avr. (en général)Fields and hillsides across the Shan uplands are burned off before the rains and the smoke sits in the valleys for weeks.66
- Paksé 🇱🇦 LaosBurning season haze · 15 févr. – 30 avr. (en général)Field clearing across southern Laos and over the Thai border fills the Mekong valley with smoke for weeks, and the view from the plateau edge disappears with it.65
- Pai 🇹🇭 ThaïlandeBurning season · 1 févr. – 20 avr. (en général)Mae Hong Son province takes the worst of the northern smoke and the valley traps it.61
- Nong Khiaw 🇱🇦 LaosBurning season haze · 1 mars – 25 avr. (en général)The viewpoints above the river are the entire reason to stop here, and for these weeks they look out on a wall of smoke from the fields burning across northern Laos.61
- Vang Vieng 🇱🇦 LaosBurning season haze · 15 févr. – 25 avr. (en général)The karst towers are the reason to stop here and for these weeks they are outlines in smoke from the fields burning up and down the valley.60
- Louang Namtha 🇱🇦 LaosBurning season haze · 1 mars – 25 avr. (en général)Northern Laos burns its fields and hillsides before the rains and this valley holds the smoke.60
- Chiang Rai 🇹🇭 ThaïlandeBurning season · 1 févr. – 20 avr. (en général)Field and forest fires in the valleys and across the border put Chiang Rai near the top of the world's air-quality charts most Marches.59
- Luang Prabang 🇱🇦 LaosBurning season haze · 1 mars – 30 avr. (en général)Agricultural burning across northern Laos and the region fills the valley with smoke for weeks; the hills disappear and flights are occasionally diverted.56
- Vientiane 🇱🇦 LaosBurning season haze · 15 févr. – 30 avr. (en général)Field and forest fires across northern Laos fill the valley with smoke and the far bank of the Mekong disappears for weeks.56
- Chiang Mai 🇹🇭 ThaïlandeBurning season · 1 févr. – 20 avr. (en général)Field and forest fires fill the valley with smoke that the surrounding hills hold in place, and the city regularly tops the world's live pollution rankings in March.54
- Bangkok 🇹🇭 ThaïlandeUpcountry burning haze · 25 janv. – 15 avr. (en général)Agricultural fires north and west of the city put a lid of smoke over Bangkok through the late dry season.51
- Ayutthaya 🇹🇭 ThaïlandeCentral plains burning haze · 20 janv. – 15 avr. (en général)Cane and stubble fires around the central provinces put a flat grey ceiling over the island for weeks.48
…et 1 de plus en avril.
Saison des fumées en mai
- Knysna 🇿🇦 Afrique du SudBerg wind fire risk · 1 mai – 30 nov. (en général)Hot, dry berg winds off the interior are what turn a plantation fire into the kind that burned through the town in June 2017.90
- Flagstaff 🇺🇸 États-UnisFire restrictions and smoke · 1 mai – 10 juil. (en général)The dry weeks before the rains arrive are when the Coconino forest goes to stage restrictions and sometimes shuts entirely — no campfires, and in a bad year no access.86
- Le Cap 🇿🇦 Afrique du SudMountain fire season · 1 nov. – 15 mai (en général)The fynbos burns most summers, and a bad day closes hiking paths, the cableway and sometimes a suburb's roads.85
- Mexico 🇲🇽 MexiqueOzone alert season · 1 mars – 31 maiStill, sunny, rainless weeks in the basin cook the traffic exhaust into ozone, and the city declares contingencies that pull cars off the road.84
- Tchita 🇷🇺 RussieSpring wildfire smoke · 1 avr. – 10 juin (en général)Dry, windy springs set off forest and grass fires across Zabaykalye almost every year; smoke can sit over the city and fire bans close forest areas.81
- Santiago 🇨🇱 ChiliWinter smog episodes · 1 mai – 31 août (en général)The valley traps the city's air under an inversion and the authorities declare alert, pre-emergency or emergency days, restricting wood burning and traffic.77
- Saïpan 🇲🇵 Îles Mariannes du NordDry-season brush fires · 1 févr. – 31 mai (en général)The grass hillsides above Kagman and out towards Marpi burn most dry seasons, largely from deliberate fires, and the smoke hangs under the trade wind on still mornings.68
Saison des fumées en juin
- Tchita 🇷🇺 RussieSpring wildfire smoke · 1 avr. – 10 juin (en général)Dry, windy springs set off forest and grass fires across Zabaykalye almost every year; smoke can sit over the city and fire bans close forest areas.93
- Lagos 🇵🇹 PortugalWildfire season inland · 15 juin – 30 sept. (en général)Monchique burns badly every few summers and the smoke reaches the coast on a north wind.93
- Marbella 🇪🇸 EspagneFire season in the sierra · 1 juin – 15 oct.Andalusia's declared high-risk fire period.92
- Faro 🇵🇹 PortugalWildfire season inland · 15 juin – 30 sept. (en général)The serra behind the coast burns most summers and the smoke drifts down to the lagoon on the wrong wind.91
- Flagstaff 🇺🇸 États-UnisFire restrictions and smoke · 1 mai – 10 juil. (en général)The dry weeks before the rains arrive are when the Coconino forest goes to stage restrictions and sometimes shuts entirely — no campfires, and in a bad year no access.91
- Évora 🇵🇹 PortugalWildfire season · 15 juin – 30 sept. (en général)The cork and eucalyptus country around the city carries fire risk all summer, and a bad week puts haze over the plain and closes rural roads at short notice.91
- Fairbanks 🇺🇸 États-UnisInterior wildfire smoke · 10 juin – 20 août (en général)Lightning fires in the boreal interior are left to burn where nothing is threatened, and the smoke settles into the Tanana valley for days.91
- Anchorage 🇺🇸 États-UnisInterior wildfire smoke · 1 juin – 15 août (en général)In a dry summer the smoke from interior and Susitna valley fires settles over the bowl for days and the mountains vanish.90
- Ajaccio 🇫🇷 FranceFire risk and closed massifs · 15 juin – 30 sept. (en général)The prefecture bans fires and outdoor work across Corse-du-Sud into the end of September, and on severe-risk days it shuts whole forest massifs to walkers and cars at a day's notice.89
- Malaga 🇪🇸 EspagneWildfire season · 15 juin – 15 oct. (en général)The Sierra de las Nieves and the hills behind the Costa burn in most bad summers, and a fire inland puts smoke over the coast and closes the mountain roads for a day or two.88
- Albufeira 🇵🇹 PortugalWildfire season inland · 15 juin – 30 sept. (en général)The coast itself rarely burns, but the Monchique and Caldeirao hills behind it do, and a bad week puts smoke over the beaches and closes the back roads.88
- Bonifacio 🇫🇷 FranceFire risk and closed massifs · 15 juin – 30 sept. (en général)The prefecture bans fires and outdoor work across Corse-du-Sud into the end of September, and on severe-risk days closes forest massifs inland, Bavella included, to walkers and cars.88
- Chalcidique 🇬🇷 GrèceWildfire season · 15 juin – 30 sept.The pine forest that runs down to the beaches is what makes this coast and what burns on it.88
- Nice 🇫🇷 FranceForest access closures · 15 juin – 30 sept. (en général)The department grades fire risk daily through the summer and closes the massifs behind the city — the Esterel, the approaches to the Mercantour — to walkers on the worst days, decided the evening before.87
- Denver 🇺🇸 États-UnisWildfire smoke and ozone · 15 juin – 15 sept. (en général)Smoke from Colorado and out-of-state fires pools against the Front Range in high summer and combines with the city's ozone problem.87
- Cagliari 🇮🇹 ItalieSardinian fire season · 1 juin – 15 oct.The regional fire campaign runs through summer and the hills either side of the city carry the risk.86
- Alghero 🇮🇹 ItalieSardinian fire season · 1 juin – 15 oct.The regional fire campaign runs all summer and the worst days are the ones when the maestrale is up.86
- Knysna 🇿🇦 Afrique du SudBerg wind fire risk · 1 mai – 30 nov. (en général)Hot, dry berg winds off the interior are what turn a plantation fire into the kind that burned through the town in June 2017.86
- Rhodes 🇬🇷 GrèceWildfire season · 15 juin – 30 sept. (en général)The island's interior burns in the worst summers and the 2023 fires emptied the southeast coast for a week.83
- Antalya 🇹🇷 TurquieWildfire season · 15 juin – 30 sept. (en général)The pine and maquis behind the resort strip burns most summers, and 2021 took the Manavgat hills.82
- Izmir 🇹🇷 TurquieWildfire season · 15 juin – 30 sept. (en général)Izmir province burns nearly every summer, usually in the pine hills between the city and the peninsula.81
- Céphalonie 🇬🇷 GrèceWildfire season · 15 juin – 30 sept.The fir forest on Mount Ainos and the scrub above the coast road carry real risk in a dry summer, and the national park closes to visitors on high-risk days.81
- Alanya 🇹🇷 TurquieWildfire season · 15 juin – 30 sept. (en général)The pine slopes behind the town burn in most bad summers, and Manavgat an hour west lost villages in 2021.80
- Parc national de Mesa Verde 🇺🇸 États-UnisWildfire season · 1 juin – 15 juil. (en général)The dry weeks before the monsoon are when the mesa burns; fires have closed the whole park more than once.78
- Santiago 🇨🇱 ChiliWinter smog episodes · 1 mai – 31 août (en général)The valley traps the city's air under an inversion and the authorities declare alert, pre-emergency or emergency days, restricting wood burning and traffic.66
…et 3 de plus en juin.
Saison des fumées en juillet
- Vancouver 🇨🇦 CanadaWildfire smoke risk · 15 juil. – 15 sept. (en général)Smoke from fires in the interior can settle over the city for days at a time in a bad year, turning the best-weather month into the worst air of the year.97
- Brasilia 🇧🇷 BrésilDry season and burn-offs · 1 juil. – 30 sept. (en général)By August the met service is issuing low-humidity warnings most days and grass fires round the Distrito Federal put a haze over the plateau.95
- Big Sur 🇺🇸 États-UnisFire season · 15 juil. – 1 nov. (en général)The Ventana wilderness burns regularly and a bad fire closes the highway, the state parks and the campgrounds at once.94
- Fairbanks 🇺🇸 États-UnisInterior wildfire smoke · 10 juin – 20 août (en général)Lightning fires in the boreal interior are left to burn where nothing is threatened, and the smoke settles into the Tanana valley for days.94
- Anchorage 🇺🇸 États-UnisInterior wildfire smoke · 1 juin – 15 août (en général)In a dry summer the smoke from interior and Susitna valley fires settles over the bowl for days and the mountains vanish.93
- Yellowknife 🇨🇦 CanadaWildfire smoke · 1 juil. – 31 août (en général)Boreal fire season can fill the city with smoke for weeks and has emptied it altogether — the whole population was evacuated in 2023.93
- Lagos 🇵🇹 PortugalWildfire season inland · 15 juin – 30 sept. (en général)Monchique burns badly every few summers and the smoke reaches the coast on a north wind.88
- Santa Cruz de la Sierra 🇧🇴 BolivieBurning season smoke · 15 juil. – 31 oct. (en général)Land clearing fires across the lowlands send smoke over the city in the late dry season, worst in dry years.88
- Portimão 🇵🇹 PortugalSerra de Monchique fire season · 1 juil. – 30 sept.The eucalyptus hills behind the coast burn most summers and a bad one puts smoke over the whole bay and closes the road up to Monchique.87
- Faro 🇵🇹 PortugalWildfire season inland · 15 juin – 30 sept. (en général)The serra behind the coast burns most summers and the smoke drifts down to the lagoon on the wrong wind.86
- Marbella 🇪🇸 EspagneFire season in the sierra · 1 juin – 15 oct.Andalusia's declared high-risk fire period.85
- Knysna 🇿🇦 Afrique du SudBerg wind fire risk · 1 mai – 30 nov. (en général)Hot, dry berg winds off the interior are what turn a plantation fire into the kind that burned through the town in June 2017.85
- Bend 🇺🇸 États-UnisWildfire smoke season · 1 juil. – 20 sept. (en général)Central Oregon's unhealthy-air days have gone from a handful a decade to dozens, and late July through August is when the smoke settles in the basin.85
- Ajaccio 🇫🇷 FranceFire risk and closed massifs · 15 juin – 30 sept. (en général)The prefecture bans fires and outdoor work across Corse-du-Sud into the end of September, and on severe-risk days it shuts whole forest massifs to walkers and cars at a day's notice.84
- Évora 🇵🇹 PortugalWildfire season · 15 juin – 30 sept. (en général)The cork and eucalyptus country around the city carries fire risk all summer, and a bad week puts haze over the plain and closes rural roads at short notice.84
- South Lake Tahoe 🇺🇸 États-UnisWildfire smoke season · 15 juil. – 30 sept. (en général)Smoke from California fires settles in the basin and stays because the mountains hold it, and a fire reached the edge of town in 2021.83
- Albufeira 🇵🇹 PortugalWildfire season inland · 15 juin – 30 sept. (en général)The coast itself rarely burns, but the Monchique and Caldeirao hills behind it do, and a bad week puts smoke over the beaches and closes the back roads.83
- Flagstaff 🇺🇸 États-UnisFire restrictions and smoke · 1 mai – 10 juil. (en général)The dry weeks before the rains arrive are when the Coconino forest goes to stage restrictions and sometimes shuts entirely — no campfires, and in a bad year no access.83
- Kelowna 🇨🇦 CanadaWildfire smoke season · 10 juil. – 15 sept. (en général)The Okanagan is one of the driest, most fire-prone valleys in Canada, and smoke from interior fires — some of them on the hills above the city — can sit in it for a week at a time.83
- Nice 🇫🇷 FranceForest access closures · 15 juin – 30 sept. (en général)The department grades fire risk daily through the summer and closes the massifs behind the city — the Esterel, the approaches to the Mercantour — to walkers on the worst days, decided the evening before.82
- Parc national de Yosemite 🇺🇸 États-UnisWildfire smoke · 15 juil. – 30 sept. (en général)Late-summer fires in and around the Sierra fill the valley with smoke that sits between the walls for days.82
- Whistler 🇨🇦 CanadaWildfire smoke · 20 juil. – 10 sept. (en général)Smoke from interior British Columbia fires drifts into the valley for days at a time in late summer and flattens the view from the Peak 2 Peak.81
- Malaga 🇪🇸 EspagneWildfire season · 15 juin – 15 oct. (en général)The Sierra de las Nieves and the hills behind the Costa burn in most bad summers, and a fire inland puts smoke over the coast and closes the mountain roads for a day or two.81
- Denver 🇺🇸 États-UnisWildfire smoke and ozone · 15 juin – 15 sept. (en général)Smoke from Colorado and out-of-state fires pools against the Front Range in high summer and combines with the city's ozone problem.81
- Bozeman 🇺🇸 États-UnisWildfire smoke · 15 juil. – 15 sept. (en général)Late-summer smoke from fires across Montana, Idaho and Canada settles into the valley and can hold for a week.81
…et 36 de plus en juillet.
Saison des fumées en août
- Seattle 🇺🇸 États-UnisWildfire smoke · 1 août – 20 sept. (en général)Late summer smoke from fires in eastern Washington, Oregon or British Columbia settles into the basin and can hold for days.95
- Vancouver 🇨🇦 CanadaWildfire smoke risk · 15 juil. – 15 sept. (en général)Smoke from fires in the interior can settle over the city for days at a time in a bad year, turning the best-weather month into the worst air of the year.94
- Big Sur 🇺🇸 États-UnisFire season · 15 juil. – 1 nov. (en général)The Ventana wilderness burns regularly and a bad fire closes the highway, the state parks and the campgrounds at once.92
- Brasilia 🇧🇷 BrésilDry season and burn-offs · 1 juil. – 30 sept. (en général)By August the met service is issuing low-humidity warnings most days and grass fires round the Distrito Federal put a haze over the plateau.91
- Napa 🇺🇸 États-UnisWildfire season · 1 août – 31 oct. (en général)Late summer and autumn are when Northern California burns, and 2017 and 2020 both cost the valley part of a vintage.90
- Portland 🇺🇸 États-UnisWildfire smoke · 1 août – 20 sept. (en général)Smoke from Cascade and Gorge fires settles in the Willamette valley for days at a time in late summer, usually on the hottest and otherwise clearest weeks of the year.89
- Bend 🇺🇸 États-UnisWildfire smoke season · 1 juil. – 20 sept. (en général)Central Oregon's unhealthy-air days have gone from a handful a decade to dozens, and late July through August is when the smoke settles in the basin.88
- South Lake Tahoe 🇺🇸 États-UnisWildfire smoke season · 15 juil. – 30 sept. (en général)Smoke from California fires settles in the basin and stays because the mountains hold it, and a fire reached the edge of town in 2021.87
- Lagos 🇵🇹 PortugalWildfire season inland · 15 juin – 30 sept. (en général)Monchique burns badly every few summers and the smoke reaches the coast on a north wind.87
- Yellowknife 🇨🇦 CanadaWildfire smoke · 1 juil. – 31 août (en général)Boreal fire season can fill the city with smoke for weeks and has emptied it altogether — the whole population was evacuated in 2023.87
- Knysna 🇿🇦 Afrique du SudBerg wind fire risk · 1 mai – 30 nov. (en général)Hot, dry berg winds off the interior are what turn a plantation fire into the kind that burned through the town in June 2017.87
- Faro 🇵🇹 PortugalWildfire season inland · 15 juin – 30 sept. (en général)The serra behind the coast burns most summers and the smoke drifts down to the lagoon on the wrong wind.85
- Kelowna 🇨🇦 CanadaWildfire smoke season · 10 juil. – 15 sept. (en général)The Okanagan is one of the driest, most fire-prone valleys in Canada, and smoke from interior fires — some of them on the hills above the city — can sit in it for a week at a time.85
- Rosario 🇦🇷 ArgentineSmoke off the delta · 15 juil. – 31 oct. (en général)Burning on the wetland islands opposite has put the city under smoke for days at a stretch in dry years, worst when the wind sits in the east.85
- Portimão 🇵🇹 PortugalSerra de Monchique fire season · 1 juil. – 30 sept.The eucalyptus hills behind the coast burn most summers and a bad one puts smoke over the whole bay and closes the road up to Monchique.85
- Denver 🇺🇸 États-UnisWildfire smoke and ozone · 15 juin – 15 sept. (en général)Smoke from Colorado and out-of-state fires pools against the Front Range in high summer and combines with the city's ozone problem.84
- Bozeman 🇺🇸 États-UnisWildfire smoke · 15 juil. – 15 sept. (en général)Late-summer smoke from fires across Montana, Idaho and Canada settles into the valley and can hold for a week.83
- Anchorage 🇺🇸 États-UnisInterior wildfire smoke · 1 juin – 15 août (en général)In a dry summer the smoke from interior and Susitna valley fires settles over the bowl for days and the mountains vanish.83
- Ajaccio 🇫🇷 FranceFire risk and closed massifs · 15 juin – 30 sept. (en général)The prefecture bans fires and outdoor work across Corse-du-Sud into the end of September, and on severe-risk days it shuts whole forest massifs to walkers and cars at a day's notice.83
- Santa Cruz de la Sierra 🇧🇴 BolivieBurning season smoke · 15 juil. – 31 oct. (en général)Land clearing fires across the lowlands send smoke over the city in the late dry season, worst in dry years.83
- Évora 🇵🇹 PortugalWildfire season · 15 juin – 30 sept. (en général)The cork and eucalyptus country around the city carries fire risk all summer, and a bad week puts haze over the plain and closes rural roads at short notice.83
- Reno 🇺🇸 États-UnisWildfire smoke · 1 juil. – 30 sept. (en général)Smoke from fires in the northern Sierra and inland California settles into the Truckee Meadows and can sit for a week, hiding the mountains from downtown.83
- Lençóis 🇧🇷 BrésilWildfire season · 1 août – 30 nov. (en général)Late in the dry season fires set to clear pasture regularly escape into the Chapada, and volunteer brigades from Lençóis spend weeks fighting them.83
- Parc national volcanique de Lassen 🇺🇸 États-UnisWildfire smoke season · 1 août – 5 oct. (en général)Northern California's fire season lands squarely on the best walking weeks, and the Dixie Fire burned most of this park in 2021.82
- Marbella 🇪🇸 EspagneFire season in the sierra · 1 juin – 15 oct.Andalusia's declared high-risk fire period.82
…et 48 de plus en août.
Saison des fumées en septembre
- Portland 🇺🇸 États-UnisWildfire smoke · 1 août – 20 sept. (en général)Smoke from Cascade and Gorge fires settles in the Willamette valley for days at a time in late summer, usually on the hottest and otherwise clearest weeks of the year.94
- Boise 🇺🇸 États-UnisWildfire smoke season · 1 juil. – 20 sept. (en général)Smoke from fires in the Idaho backcountry and from Oregon and California settles into the valley for stretches of days at a time.94
- Kelowna 🇨🇦 CanadaWildfire smoke season · 10 juil. – 15 sept. (en général)The Okanagan is one of the driest, most fire-prone valleys in Canada, and smoke from interior fires — some of them on the hills above the city — can sit in it for a week at a time.94
- Santa Barbara 🇺🇸 États-UnisSundowner wind and fire season · 15 sept. – 15 déc. (en général)Hot dry winds fall down the Santa Ynez range onto the town in the evenings of late autumn, which is when this coast's serious fires have started.93
- Salt Lake City 🇺🇸 États-UnisWildfire smoke season · 15 juil. – 20 sept. (en général)The same valley that traps winter exhaust traps summer smoke drifting in from the Great Basin and California.92
- Bend 🇺🇸 États-UnisWildfire smoke season · 1 juil. – 20 sept. (en général)Central Oregon's unhealthy-air days have gone from a handful a decade to dozens, and late July through August is when the smoke settles in the basin.92
- Big Sur 🇺🇸 États-UnisFire season · 15 juil. – 1 nov. (en général)The Ventana wilderness burns regularly and a bad fire closes the highway, the state parks and the campgrounds at once.91
- Rosario 🇦🇷 ArgentineSmoke off the delta · 15 juil. – 31 oct. (en général)Burning on the wetland islands opposite has put the city under smoke for days at a stretch in dry years, worst when the wind sits in the east.91
- Chalcidique 🇬🇷 GrèceWildfire season · 15 juin – 30 sept.The pine forest that runs down to the beaches is what makes this coast and what burns on it.91
- Reno 🇺🇸 États-UnisWildfire smoke · 1 juil. – 30 sept. (en général)Smoke from fires in the northern Sierra and inland California settles into the Truckee Meadows and can sit for a week, hiding the mountains from downtown.91
- Denver 🇺🇸 États-UnisWildfire smoke and ozone · 15 juin – 15 sept. (en général)Smoke from Colorado and out-of-state fires pools against the Front Range in high summer and combines with the city's ozone problem.90
- San Diego 🇺🇸 États-UnisSanta Ana wind and fire season · 15 sept. – 15 déc. (en général)Offshore winds off the desert bring the hottest days of the San Diego year in autumn and the county's worst fire risk with them.90
- Lagos 🇵🇹 PortugalWildfire season inland · 15 juin – 30 sept. (en général)Monchique burns badly every few summers and the smoke reaches the coast on a north wind.90
- Faro 🇵🇹 PortugalWildfire season inland · 15 juin – 30 sept. (en général)The serra behind the coast burns most summers and the smoke drifts down to the lagoon on the wrong wind.90
- Nice 🇫🇷 FranceForest access closures · 15 juin – 30 sept. (en général)The department grades fire risk daily through the summer and closes the massifs behind the city — the Esterel, the approaches to the Mercantour — to walkers on the worst days, decided the evening before.89
- Seattle 🇺🇸 États-UnisWildfire smoke · 1 août – 20 sept. (en général)Late summer smoke from fires in eastern Washington, Oregon or British Columbia settles into the basin and can hold for days.89
- Portimão 🇵🇹 PortugalSerra de Monchique fire season · 1 juil. – 30 sept.The eucalyptus hills behind the coast burn most summers and a bad one puts smoke over the whole bay and closes the road up to Monchique.89
- Évora 🇵🇹 PortugalWildfire season · 15 juin – 30 sept. (en général)The cork and eucalyptus country around the city carries fire risk all summer, and a bad week puts haze over the plain and closes rural roads at short notice.89
- Napa 🇺🇸 États-UnisWildfire season · 1 août – 31 oct. (en général)Late summer and autumn are when Northern California burns, and 2017 and 2020 both cost the valley part of a vintage.88
- Marbella 🇪🇸 EspagneFire season in the sierra · 1 juin – 15 oct.Andalusia's declared high-risk fire period.88
- Ajaccio 🇫🇷 FranceFire risk and closed massifs · 15 juin – 30 sept. (en général)The prefecture bans fires and outdoor work across Corse-du-Sud into the end of September, and on severe-risk days it shuts whole forest massifs to walkers and cars at a day's notice.88
- Knysna 🇿🇦 Afrique du SudBerg wind fire risk · 1 mai – 30 nov. (en général)Hot, dry berg winds off the interior are what turn a plantation fire into the kind that burned through the town in June 2017.88
- Bozeman 🇺🇸 États-UnisWildfire smoke · 15 juil. – 15 sept. (en général)Late-summer smoke from fires across Montana, Idaho and Canada settles into the valley and can hold for a week.87
- Albufeira 🇵🇹 PortugalWildfire season inland · 15 juin – 30 sept. (en général)The coast itself rarely burns, but the Monchique and Caldeirao hills behind it do, and a bad week puts smoke over the beaches and closes the back roads.87
- Sacramento 🇺🇸 États-UnisWildfire smoke season · 15 juil. – 15 oct. (en général)Smoke from fires in the Sierra and the coast range settles into the valley and stays, because the same still air that traps winter fog traps this.87
…et 47 de plus en septembre.
Saison des fumées en octobre
- Santa Barbara 🇺🇸 États-UnisSundowner wind and fire season · 15 sept. – 15 déc. (en général)Hot dry winds fall down the Santa Ynez range onto the town in the evenings of late autumn, which is when this coast's serious fires have started.96
- San Diego 🇺🇸 États-UnisSanta Ana wind and fire season · 15 sept. – 15 déc. (en général)Offshore winds off the desert bring the hottest days of the San Diego year in autumn and the county's worst fire risk with them.94
- Cagliari 🇮🇹 ItalieSardinian fire season · 1 juin – 15 oct.The regional fire campaign runs through summer and the hills either side of the city carry the risk.92
- Knysna 🇿🇦 Afrique du SudBerg wind fire risk · 1 mai – 30 nov. (en général)Hot, dry berg winds off the interior are what turn a plantation fire into the kind that burned through the town in June 2017.92
- Rosario 🇦🇷 ArgentineSmoke off the delta · 15 juil. – 31 oct. (en général)Burning on the wetland islands opposite has put the city under smoke for days at a stretch in dry years, worst when the wind sits in the east.91
- Big Sur 🇺🇸 États-UnisFire season · 15 juil. – 1 nov. (en général)The Ventana wilderness burns regularly and a bad fire closes the highway, the state parks and the campgrounds at once.90
- Alghero 🇮🇹 ItalieSardinian fire season · 1 juin – 15 oct.The regional fire campaign runs all summer and the worst days are the ones when the maestrale is up.90
- Sacramento 🇺🇸 États-UnisWildfire smoke season · 15 juil. – 15 oct. (en général)Smoke from fires in the Sierra and the coast range settles into the valley and stays, because the same still air that traps winter fog traps this.90
- Los Angeles 🇺🇸 États-UnisSanta Ana wind and fire season · 15 sept. – 15 déc. (en général)Offshore winds arrive over vegetation that has had no rain since spring, and the fire risk peaks before the first storms.89
- Malaga 🇪🇸 EspagneWildfire season · 15 juin – 15 oct. (en général)The Sierra de las Nieves and the hills behind the Costa burn in most bad summers, and a fire inland puts smoke over the coast and closes the mountain roads for a day or two.89
- Marbella 🇪🇸 EspagneFire season in the sierra · 1 juin – 15 oct.Andalusia's declared high-risk fire period.87
- Napa 🇺🇸 États-UnisWildfire season · 1 août – 31 oct. (en général)Late summer and autumn are when Northern California burns, and 2017 and 2020 both cost the valley part of a vintage.86
- Le Caire 🇪🇬 ÉgypteThe black cloud · 1 oct. – 30 nov. (en général)Smoke from rice-straw burning in the Delta gets trapped over Cairo by autumn inversions and sits there for days.79
- Katoomba 🇦🇺 AustralieBushfire season · 1 oct. – 1 mars (en général)The whole town sits inside the national park, so a bad fire week means smoke, closed tracks and, on the worst days, a closed highway.79
- Amritsar 🇮🇳 IndeStubble-burning smoke · 5 oct. – 25 nov. (en général)Paddy stubble is burned off across the Majha districts in the fortnight between the rice harvest and the wheat sowing, and the smoke sits low over the city for weeks.75
- Lençóis 🇧🇷 BrésilWildfire season · 1 août – 30 nov. (en général)Late in the dry season fires set to clear pasture regularly escape into the Chapada, and volunteer brigades from Lençóis spend weeks fighting them.75
- Delhi 🇮🇳 IndeSevere air season · 1 oct. – 31 janv. (en général)Emergency pollution restrictions run from 1 October: construction bans, diesel-vehicle limits and schools moved online when it escalates.69
- Santa Cruz de la Sierra 🇧🇴 BolivieBurning season smoke · 15 juil. – 31 oct. (en général)Land clearing fires across the lowlands send smoke over the city in the late dry season, worst in dry years.69
- Parc national de Sequoia 🇺🇸 États-UnisWildfire smoke season · 15 juil. – 15 oct. (en général)Late summer brings smoke from fires in the Sierra and up out of the Central Valley, and the groves themselves have burned within the last few years.65
- Parc national de Kings Canyon 🇺🇸 États-UnisWildfire smoke season · 1 août – 5 oct. (en général)Smoke from fires in the Sierra and up the Central Valley fills the canyon and can shut the park outright, as it has more than once.65
- Parc national volcanique de Lassen 🇺🇸 États-UnisWildfire smoke season · 1 août – 5 oct. (en général)Northern California's fire season lands squarely on the best walking weeks, and the Dixie Fire burned most of this park in 2021.63
- Manaus 🇧🇷 BrésilBurning-season smoke · 15 août – 15 nov. (en général)The end of the dry season is when the forest and pasture around the city burn, and the smoke settles over Manaus.60
- Lac Toba 🇮🇩 IndonésieSumatran haze · 15 juil. – 15 oct. (en général)In a dry year, smoke from land clearing further south on the island drifts north and the caldera rim goes flat and grey.57
- Malacca 🇲🇾 MalaisieHaze season · 1 août – 15 oct. (en général)Smoke off Sumatra crosses the strait in the drier weeks and the view from the hill goes flat white.55
- Singapour 🇸🇬 SingapourRegional haze risk · 1 juin – 15 oct. (en général)Fires on Sumatra and Borneo can push smoke over the island for days at a time in some years and not at all in others.52
…et 8 de plus en octobre.
Saison des fumées en novembre
- Le Cap 🇿🇦 Afrique du SudMountain fire season · 1 nov. – 15 mai (en général)The fynbos burns most summers, and a bad day closes hiking paths, the cableway and sometimes a suburb's roads.95
- Katmandou 🇳🇵 NépalValley smog season · 15 nov. – 28 févr. (en général)Cold air sits in the bowl of the valley and holds in kiln smoke, vehicle exhaust and field burning from the plains.92
- Perth 🇦🇺 AustralieBushfire season · 15 nov. – 15 avr. (en général)Fires in the hills east of the city put smoke over the suburbs on still days and close the walking trails on the worst ones.92
- Knysna 🇿🇦 Afrique du SudBerg wind fire risk · 1 mai – 30 nov. (en général)Hot, dry berg winds off the interior are what turn a plantation fire into the kind that burned through the town in June 2017.92
- Los Angeles 🇺🇸 États-UnisSanta Ana wind and fire season · 15 sept. – 15 déc. (en général)Offshore winds arrive over vegetation that has had no rain since spring, and the fire risk peaks before the first storms.91
- San Diego 🇺🇸 États-UnisSanta Ana wind and fire season · 15 sept. – 15 déc. (en général)Offshore winds off the desert bring the hottest days of the San Diego year in autumn and the county's worst fire risk with them.91
- Île Kangourou 🇦🇺 AustralieFire danger season closures · 15 nov. – 15 avr. (en général)National parks here close on catastrophic fire danger days, which lands squarely in the summer holidays.91
- Margaret River 🇦🇺 AustralieBushfire and burn-off season · 15 nov. – 15 avr. (en général)Summer brings total fire bans and closed forest tracks, and the autumn prescribed burns put smoke through the valleys on still days.90
- Le Caire 🇪🇬 ÉgypteThe black cloud · 1 oct. – 30 nov. (en général)Smoke from rice-straw burning in the Delta gets trapped over Cairo by autumn inversions and sits there for days.88
- Sydney 🇦🇺 AustralieBushfire smoke risk · 1 nov. – 28 févr. (en général)Fires inland or on the coast can put smoke over the city for days in a bad summer; the fire service publishes a danger rating for the Sydney region daily.87
- Amritsar 🇮🇳 IndeStubble-burning smoke · 5 oct. – 25 nov. (en général)Paddy stubble is burned off across the Majha districts in the fortnight between the rice harvest and the wheat sowing, and the smoke sits low over the city for weeks.87
- Santa Barbara 🇺🇸 États-UnisSundowner wind and fire season · 15 sept. – 15 déc. (en général)Hot dry winds fall down the Santa Ynez range onto the town in the evenings of late autumn, which is when this coast's serious fires have started.87
- Delhi 🇮🇳 IndeSevere air season · 1 oct. – 31 janv. (en général)Emergency pollution restrictions run from 1 October: construction bans, diesel-vehicle limits and schools moved online when it escalates.84
- Big Sur 🇺🇸 États-UnisFire season · 15 juil. – 1 nov. (en général)The Ventana wilderness burns regularly and a bad fire closes the highway, the state parks and the campgrounds at once.82
- Katoomba 🇦🇺 AustralieBushfire season · 1 oct. – 1 mars (en général)The whole town sits inside the national park, so a bad fire week means smoke, closed tracks and, on the worst days, a closed highway.80
- Lençóis 🇧🇷 BrésilWildfire season · 1 août – 30 nov. (en général)Late in the dry season fires set to clear pasture regularly escape into the Chapada, and volunteer brigades from Lençóis spend weeks fighting them.69
- Manaus 🇧🇷 BrésilBurning-season smoke · 15 août – 15 nov. (en général)The end of the dry season is when the forest and pasture around the city burn, and the smoke settles over Manaus.57
- Almaty 🇰🇿 KazakhstanWinter smog · 15 nov. – 1 mars (en général)Coal heating and a valley inversion pin the smoke over the city for weeks at a time once the cold sets in.56
- Oulan-Bator 🇲🇳 MongolieWinter smog · 1 nov. – 31 marsRaw coal burned in the ger districts for heating, held down over the valley by an inversion, makes this one of the worst urban airs anywhere between November and March.40
Saison des fumées en décembre
- Margaret River 🇦🇺 AustralieBushfire and burn-off season · 15 nov. – 15 avr. (en général)Summer brings total fire bans and closed forest tracks, and the autumn prescribed burns put smoke through the valleys on still days.96
- Île Kangourou 🇦🇺 AustralieFire danger season closures · 15 nov. – 15 avr. (en général)National parks here close on catastrophic fire danger days, which lands squarely in the summer holidays.94
- Melbourne 🇦🇺 AustralieBushfire season · 1 déc. – 15 mars (en général)The risk in the country around the city peaks after midsummer, and a bad day closes the roads and fills the basin with smoke.92
- Valparaíso 🇨🇱 ChiliFire season in the hills · 15 déc. – 15 avr. (en général)The ravines behind the port dry out over summer and fires have run through the upper hills more than once, the worst of them destroying whole cerros.92
- Le Cap 🇿🇦 Afrique du SudMountain fire season · 1 nov. – 15 mai (en général)The fynbos burns most summers, and a bad day closes hiking paths, the cableway and sometimes a suburb's roads.91
- Hobart 🇦🇺 AustralieBushfire season · 1 déc. – 15 mars (en général)A dry spell in the highlands can put smoke over the Derwent for days and close the walking tracks around the city.90
- Delhi 🇮🇳 IndeSevere air season · 1 oct. – 31 janv. (en général)Emergency pollution restrictions run from 1 October: construction bans, diesel-vehicle limits and schools moved online when it escalates.88
- Sydney 🇦🇺 AustralieBushfire smoke risk · 1 nov. – 28 févr. (en général)Fires inland or on the coast can put smoke over the city for days in a bad summer; the fire service publishes a danger rating for the Sydney region daily.87
- Perth 🇦🇺 AustralieBushfire season · 15 nov. – 15 avr. (en général)Fires in the hills east of the city put smoke over the suburbs on still days and close the walking trails on the worst ones.87
- Katoomba 🇦🇺 AustralieBushfire season · 1 oct. – 1 mars (en général)The whole town sits inside the national park, so a bad fire week means smoke, closed tracks and, on the worst days, a closed highway.86
- San Diego 🇺🇸 États-UnisSanta Ana wind and fire season · 15 sept. – 15 déc. (en général)Offshore winds off the desert bring the hottest days of the San Diego year in autumn and the county's worst fire risk with them.83
- Los Angeles 🇺🇸 États-UnisSanta Ana wind and fire season · 15 sept. – 15 déc. (en général)Offshore winds arrive over vegetation that has had no rain since spring, and the fire risk peaks before the first storms.81
- Katmandou 🇳🇵 NépalValley smog season · 15 nov. – 28 févr. (en général)Cold air sits in the bowl of the valley and holds in kiln smoke, vehicle exhaust and field burning from the plains.80
- Santa Barbara 🇺🇸 États-UnisSundowner wind and fire season · 15 sept. – 15 déc. (en général)Hot dry winds fall down the Santa Ynez range onto the town in the evenings of late autumn, which is when this coast's serious fires have started.77
- San Carlos de Bariloche 🇦🇷 ArgentinePatagonian fire season · 1 déc. – 31 mars (en général)Nahuel Huapi runs a fire risk level through the dry summer and closes trails, campsites and whole valleys when it peaks.76
- Salt Lake City 🇺🇸 États-UnisWinter inversion · 15 déc. – 20 févr. (en général)Cold air settles in the valley under a lid of warm air and the exhaust has nowhere to go, sometimes for a fortnight.53
- Almaty 🇰🇿 KazakhstanWinter smog · 15 nov. – 1 mars (en général)Coal heating and a valley inversion pin the smoke over the city for weeks at a time once the cold sets in.42
- Oulan-Bator 🇲🇳 MongolieWinter smog · 1 nov. – 31 marsRaw coal burned in the ger districts for heating, held down over the valley by an inversion, makes this one of the worst urban airs anywhere between November and March.29