Temporada de humo, mes a mes en todo el mundo
Quemas de campos o incendios forestales; el problema es el aire, no el tiempo.
Esta es una página de aviso, no una recomendación. Temporada de humo afecta a 115 destinos de SeasonMap; los meses de abajo son aquellos en los que la ventana de riesgo está abierta. La mayoría de sus semanas pasan sin incidentes, y la puntuación junto a cada lugar sigue siendo la puntuación climática normal, riesgo incluido.
Cuándo es
Temporada de humo en enero
- Hobart 🇦🇺 AustraliaBushfire season · 1 Dic – 15 Mar (normalmente)A dry spell in the highlands can put smoke over the Derwent for days and close the walking tracks around the city.96
- Valparaíso 🇨🇱 ChileFire season in the hills · 15 Dic – 15 Abr (normalmente)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 🇦🇺 AustraliaBushfire and burn-off season · 15 Nov – 15 Abr (normalmente)Summer brings total fire bans and closed forest tracks, and the autumn prescribed burns put smoke through the valleys on still days.93
- Isla Canguro 🇦🇺 AustraliaFire danger season closures · 15 Nov – 15 Abr (normalmente)National parks here close on catastrophic fire danger days, which lands squarely in the summer holidays.93
- Melbourne 🇦🇺 AustraliaBushfire season · 1 Dic – 15 Mar (normalmente)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
- Ciudad del Cabo 🇿🇦 SudáfricaMountain fire season · 1 Nov – 15 May (normalmente)The fynbos burns most summers, and a bad day closes hiking paths, the cableway and sometimes a suburb's roads.86
- Sídney 🇦🇺 AustraliaBushfire smoke risk · 1 Nov – 28 Feb (normalmente)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 🇦🇺 AustraliaBushfire season · 15 Nov – 15 Abr (normalmente)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 🇦🇷 ArgentinaPatagonian fire season · 1 Dic – 31 Mar (normalmente)Nahuel Huapi runs a fire risk level through the dry summer and closes trails, campsites and whole valleys when it peaks.80
- Delhi 🇮🇳 IndiaSevere air season · 1 Oct – 31 Ene (normalmente)Emergency pollution restrictions run from 1 October: construction bans, diesel-vehicle limits and schools moved online when it escalates.80
- Katoomba 🇦🇺 AustraliaBushfire season · 1 Oct – 1 Mar (normalmente)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 🇹🇭 TailandiaCentral plains burning haze · 20 Ene – 15 Abr (normalmente)Cane and stubble fires around the central provinces put a flat grey ceiling over the island for weeks.78
- Katmandú 🇳🇵 NepalValley smog season · 15 Nov – 28 Feb (normalmente)Cold air sits in the bowl of the valley and holds in kiln smoke, vehicle exhaust and field burning from the plains.76
- Bangkok 🇹🇭 TailandiaUpcountry burning haze · 25 Ene – 15 Abr (normalmente)Agricultural fires north and west of the city put a lid of smoke over Bangkok through the late dry season.73
- Salt Lake City 🇺🇸 Estados UnidosWinter inversion · 15 Dic – 20 Feb (normalmente)Cold air settles in the valley under a lid of warm air and the exhaust has nowhere to go, sometimes for a fortnight.51
- Alma Ata 🇰🇿 KazajistánWinter smog · 15 Nov – 1 Mar (normalmente)Coal heating and a valley inversion pin the smoke over the city for weeks at a time once the cold sets in.39
- Ulán Bator 🇲🇳 MongoliaWinter smog · 1 Nov – 31 MarRaw 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
Temporada de humo en febrero
- Hobart 🇦🇺 AustraliaBushfire season · 1 Dic – 15 Mar (normalmente)A dry spell in the highlands can put smoke over the Derwent for days and close the walking tracks around the city.95
- Isla Canguro 🇦🇺 AustraliaFire danger season closures · 15 Nov – 15 Abr (normalmente)National parks here close on catastrophic fire danger days, which lands squarely in the summer holidays.95
- Margaret River 🇦🇺 AustraliaBushfire and burn-off season · 15 Nov – 15 Abr (normalmente)Summer brings total fire bans and closed forest tracks, and the autumn prescribed burns put smoke through the valleys on still days.94
- Valparaíso 🇨🇱 ChileFire season in the hills · 15 Dic – 15 Abr (normalmente)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 🇦🇺 AustraliaBushfire season · 1 Dic – 15 Mar (normalmente)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 🇲🇲 BirmaniaBurning season haze · 15 Feb – 30 Abr (normalmente)Hillsides around the town are burned off before the rains and the smoke sits in the valleys below the ridge.90
- Ciudad del Cabo 🇿🇦 SudáfricaMountain fire season · 1 Nov – 15 May (normalmente)The fynbos burns most summers, and a bad day closes hiking paths, the cableway and sometimes a suburb's roads.88
- Lago Inle 🇲🇲 BirmaniaBurning season haze · 15 Feb – 30 Abr (normalmente)The Shan uplands are burned off before the rains and the smoke settles into the basin the lake sits in.86
- Katmandú 🇳🇵 NepalValley smog season · 15 Nov – 28 Feb (normalmente)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 🇹🇭 TailandiaBurning season · 1 Feb – 20 Abr (normalmente)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
- Hsipaw 🇲🇲 BirmaniaBurning season haze · 15 Feb – 30 Abr (normalmente)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 🇹🇭 TailandiaBurning season · 1 Feb – 20 Abr (normalmente)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 🇦🇺 AustraliaBushfire season · 15 Nov – 15 Abr (normalmente)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 🇦🇺 AustraliaBushfire season · 1 Oct – 1 Mar (normalmente)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 🇦🇷 ArgentinaPatagonian fire season · 1 Dic – 31 Mar (normalmente)Nahuel Huapi runs a fire risk level through the dry summer and closes trails, campsites and whole valleys when it peaks.81
- Pai 🇹🇭 TailandiaBurning season · 1 Feb – 20 Abr (normalmente)Mae Hong Son province takes the worst of the northern smoke and the valley traps it.81
- Vientián 🇱🇦 LaosBurning season haze · 15 Feb – 30 Abr (normalmente)Field and forest fires across northern Laos fill the valley with smoke and the far bank of the Mekong disappears for weeks.81
- Pāksē 🇱🇦 LaosBurning season haze · 15 Feb – 30 Abr (normalmente)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
- Sídney 🇦🇺 AustraliaBushfire smoke risk · 1 Nov – 28 Feb (normalmente)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 Feb – 25 Abr (normalmente)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
- Saipán 🇲🇵 Islas Marianas del NorteDry-season brush fires · 1 Feb – 31 May (normalmente)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 🇹🇭 TailandiaCentral plains burning haze · 20 Ene – 15 Abr (normalmente)Cane and stubble fires around the central provinces put a flat grey ceiling over the island for weeks.72
- Bangkok 🇹🇭 TailandiaUpcountry burning haze · 25 Ene – 15 Abr (normalmente)Agricultural fires north and west of the city put a lid of smoke over Bangkok through the late dry season.69
- Kanchanaburi 🇹🇭 TailandiaBurning season haze · 1 Feb – 15 Abr (normalmente)Field and forest fires along the western hills and over the Myanmar border grey out the valley for weeks.69
- Salt Lake City 🇺🇸 Estados UnidosWinter inversion · 15 Dic – 20 Feb (normalmente)Cold air settles in the valley under a lid of warm air and the exhaust has nowhere to go, sometimes for a fortnight.61
…y 2 más en febrero.
Temporada de humo en marzo
- Isla Canguro 🇦🇺 AustraliaFire danger season closures · 15 Nov – 15 Abr (normalmente)National parks here close on catastrophic fire danger days, which lands squarely in the summer holidays.97
- Melbourne 🇦🇺 AustraliaBushfire season · 1 Dic – 15 Mar (normalmente)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 🇨🇱 ChileFire season in the hills · 15 Dic – 15 Abr (normalmente)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 🇦🇺 AustraliaBushfire and burn-off season · 15 Nov – 15 Abr (normalmente)Summer brings total fire bans and closed forest tracks, and the autumn prescribed burns put smoke through the valleys on still days.92
- Ciudad de México 🇲🇽 MéxicoOzone alert season · 1 Mar – 31 MayStill, sunny, rainless weeks in the basin cook the traffic exhaust into ozone, and the city declares contingencies that pull cars off the road.90
- Ciudad del Cabo 🇿🇦 SudáfricaMountain fire season · 1 Nov – 15 May (normalmente)The fynbos burns most summers, and a bad day closes hiking paths, the cableway and sometimes a suburb's roads.90
- Hobart 🇦🇺 AustraliaBushfire season · 1 Dic – 15 Mar (normalmente)A dry spell in the highlands can put smoke over the Derwent for days and close the walking tracks around the city.90
- Perth 🇦🇺 AustraliaBushfire season · 15 Nov – 15 Abr (normalmente)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 🇲🇲 BirmaniaBurning season haze · 15 Feb – 30 Abr (normalmente)Hillsides around the town are burned off before the rains and the smoke sits in the valleys below the ridge.84
- Jinghong 🇨🇳 República Popular ChinaBurning season haze · 1 Mar – 20 Abr (normalmente)Field burning across the border in Myanmar and Laos drifts up the Mekong valley through the last dry weeks.81
- Lago Inle 🇲🇲 BirmaniaBurning season haze · 15 Feb – 30 Abr (normalmente)The Shan uplands are burned off before the rains and the smoke settles into the basin the lake sits in.80
- Hsipaw 🇲🇲 BirmaniaBurning season haze · 15 Feb – 30 Abr (normalmente)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 🇦🇷 ArgentinaPatagonian fire season · 1 Dic – 31 Mar (normalmente)Nahuel Huapi runs a fire risk level through the dry summer and closes trails, campsites and whole valleys when it peaks.74
- Saipán 🇲🇵 Islas Marianas del NorteDry-season brush fires · 1 Feb – 31 May (normalmente)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 🇹🇭 TailandiaBurning season · 1 Feb – 20 Abr (normalmente)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 🇹🇭 TailandiaBurning season · 1 Feb – 20 Abr (normalmente)Mae Hong Son province takes the worst of the northern smoke and the valley traps it.72
- Pāksē 🇱🇦 LaosBurning season haze · 15 Feb – 30 Abr (normalmente)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 🇦🇺 AustraliaBushfire season · 1 Oct – 1 Mar (normalmente)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 🇰🇷 Corea del SurSpring wildfire weeks · 1 Mar – 30 Abr (normalmente)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
- Lūang Namthā 🇱🇦 LaosBurning season haze · 1 Mar – 25 Abr (normalmente)Northern Laos burns its fields and hillsides before the rains and this valley holds the smoke.72
- Nong Khiaw 🇱🇦 LaosBurning season haze · 1 Mar – 25 Abr (normalmente)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 🇰🇷 Corea del SurSpring wildfire season · 1 Mar – 30 Abr (normalmente)Dry air and the hot downslope wind off the Taebaek range make March and April Gangwon's fire season.71
- Lūang Phabāng 🇱🇦 LaosBurning season haze · 1 Mar – 30 Abr (normalmente)Agricultural burning across northern Laos and the region fills the valley with smoke for weeks; the hills disappear and flights are occasionally diverted.70
- Vientián 🇱🇦 LaosBurning season haze · 15 Feb – 30 Abr (normalmente)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 Feb – 25 Abr (normalmente)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
…y 6 más en marzo.
Temporada de humo en abril
- Ciudad del Cabo 🇿🇦 SudáfricaMountain fire season · 1 Nov – 15 May (normalmente)The fynbos burns most summers, and a bad day closes hiking paths, the cableway and sometimes a suburb's roads.93
- Perth 🇦🇺 AustraliaBushfire season · 15 Nov – 15 Abr (normalmente)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
- Isla Canguro 🇦🇺 AustraliaFire danger season closures · 15 Nov – 15 Abr (normalmente)National parks here close on catastrophic fire danger days, which lands squarely in the summer holidays.89
- Ciudad de México 🇲🇽 MéxicoOzone alert season · 1 Mar – 31 MayStill, 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 🇨🇱 ChileFire season in the hills · 15 Dic – 15 Abr (normalmente)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 🇦🇺 AustraliaBushfire and burn-off season · 15 Nov – 15 Abr (normalmente)Summer brings total fire bans and closed forest tracks, and the autumn prescribed burns put smoke through the valleys on still days.85
- Gangneung 🇰🇷 Corea del SurSpring wildfire weeks · 1 Mar – 30 Abr (normalmente)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 🇰🇷 Corea del SurSpring wildfire season · 1 Mar – 30 Abr (normalmente)Dry air and the hot downslope wind off the Taebaek range make March and April Gangwon's fire season.82
- Kalaw 🇲🇲 BirmaniaBurning season haze · 15 Feb – 30 Abr (normalmente)Hillsides around the town are burned off before the rains and the smoke sits in the valleys below the ridge.77
- Saipán 🇲🇵 Islas Marianas del NorteDry-season brush fires · 1 Feb – 31 May (normalmente)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
- Lago Inle 🇲🇲 BirmaniaBurning season haze · 15 Feb – 30 Abr (normalmente)The Shan uplands are burned off before the rains and the smoke settles into the basin the lake sits in.72
- Chitá 🇷🇺 RusiaSpring wildfire smoke · 1 Abr – 10 Jun (normalmente)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 🇨🇳 República Popular ChinaBurning season haze · 1 Mar – 20 Abr (normalmente)Field burning across the border in Myanmar and Laos drifts up the Mekong valley through the last dry weeks.68
- Hsipaw 🇲🇲 BirmaniaBurning season haze · 15 Feb – 30 Abr (normalmente)Fields and hillsides across the Shan uplands are burned off before the rains and the smoke sits in the valleys for weeks.66
- Pāksē 🇱🇦 LaosBurning season haze · 15 Feb – 30 Abr (normalmente)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 🇹🇭 TailandiaBurning season · 1 Feb – 20 Abr (normalmente)Mae Hong Son province takes the worst of the northern smoke and the valley traps it.61
- Nong Khiaw 🇱🇦 LaosBurning season haze · 1 Mar – 25 Abr (normalmente)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 Feb – 25 Abr (normalmente)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
- Lūang Namthā 🇱🇦 LaosBurning season haze · 1 Mar – 25 Abr (normalmente)Northern Laos burns its fields and hillsides before the rains and this valley holds the smoke.60
- Chiang Rai 🇹🇭 TailandiaBurning season · 1 Feb – 20 Abr (normalmente)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
- Lūang Phabāng 🇱🇦 LaosBurning season haze · 1 Mar – 30 Abr (normalmente)Agricultural burning across northern Laos and the region fills the valley with smoke for weeks; the hills disappear and flights are occasionally diverted.56
- Vientián 🇱🇦 LaosBurning season haze · 15 Feb – 30 Abr (normalmente)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 🇹🇭 TailandiaBurning season · 1 Feb – 20 Abr (normalmente)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 🇹🇭 TailandiaUpcountry burning haze · 25 Ene – 15 Abr (normalmente)Agricultural fires north and west of the city put a lid of smoke over Bangkok through the late dry season.51
- Ayutthaya 🇹🇭 TailandiaCentral plains burning haze · 20 Ene – 15 Abr (normalmente)Cane and stubble fires around the central provinces put a flat grey ceiling over the island for weeks.48
…y 1 más en abril.
Temporada de humo en mayo
- Knysna 🇿🇦 SudáfricaBerg wind fire risk · 1 May – 30 Nov (normalmente)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 🇺🇸 Estados UnidosFire restrictions and smoke · 1 May – 10 Jul (normalmente)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
- Ciudad del Cabo 🇿🇦 SudáfricaMountain fire season · 1 Nov – 15 May (normalmente)The fynbos burns most summers, and a bad day closes hiking paths, the cableway and sometimes a suburb's roads.85
- Ciudad de México 🇲🇽 MéxicoOzone alert season · 1 Mar – 31 MayStill, sunny, rainless weeks in the basin cook the traffic exhaust into ozone, and the city declares contingencies that pull cars off the road.84
- Chitá 🇷🇺 RusiaSpring wildfire smoke · 1 Abr – 10 Jun (normalmente)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 de Chile 🇨🇱 ChileWinter smog episodes · 1 May – 31 Ago (normalmente)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
- Saipán 🇲🇵 Islas Marianas del NorteDry-season brush fires · 1 Feb – 31 May (normalmente)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
Temporada de humo en junio
- Chitá 🇷🇺 RusiaSpring wildfire smoke · 1 Abr – 10 Jun (normalmente)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 Jun – 30 Sep (normalmente)Monchique burns badly every few summers and the smoke reaches the coast on a north wind.93
- Marbella 🇪🇸 EspañaFire season in the sierra · 1 Jun – 15 OctAndalusia's declared high-risk fire period.92
- Faro 🇵🇹 PortugalWildfire season inland · 15 Jun – 30 Sep (normalmente)The serra behind the coast burns most summers and the smoke drifts down to the lagoon on the wrong wind.91
- Flagstaff 🇺🇸 Estados UnidosFire restrictions and smoke · 1 May – 10 Jul (normalmente)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 Jun – 30 Sep (normalmente)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 🇺🇸 Estados UnidosInterior wildfire smoke · 10 Jun – 20 Ago (normalmente)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 🇺🇸 Estados UnidosInterior wildfire smoke · 1 Jun – 15 Ago (normalmente)In a dry summer the smoke from interior and Susitna valley fires settles over the bowl for days and the mountains vanish.90
- Ajaccio 🇫🇷 FranciaFire risk and closed massifs · 15 Jun – 30 Sep (normalmente)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
- Málaga 🇪🇸 EspañaWildfire season · 15 Jun – 15 Oct (normalmente)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 Jun – 30 Sep (normalmente)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 🇫🇷 FranciaFire risk and closed massifs · 15 Jun – 30 Sep (normalmente)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
- Calcídica 🇬🇷 GreciaWildfire season · 15 Jun – 30 SepThe pine forest that runs down to the beaches is what makes this coast and what burns on it.88
- Niza 🇫🇷 FranciaForest access closures · 15 Jun – 30 Sep (normalmente)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 🇺🇸 Estados UnidosWildfire smoke and ozone · 15 Jun – 15 Sep (normalmente)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 🇮🇹 ItaliaSardinian fire season · 1 Jun – 15 OctThe regional fire campaign runs through summer and the hills either side of the city carry the risk.86
- Alguer 🇮🇹 ItaliaSardinian fire season · 1 Jun – 15 OctThe regional fire campaign runs all summer and the worst days are the ones when the maestrale is up.86
- Knysna 🇿🇦 SudáfricaBerg wind fire risk · 1 May – 30 Nov (normalmente)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
- Rodas 🇬🇷 GreciaWildfire season · 15 Jun – 30 Sep (normalmente)The island's interior burns in the worst summers and the 2023 fires emptied the southeast coast for a week.83
- Antalya 🇹🇷 TurquíaWildfire season · 15 Jun – 30 Sep (normalmente)The pine and maquis behind the resort strip burns most summers, and 2021 took the Manavgat hills.82
- Esmirna 🇹🇷 TurquíaWildfire season · 15 Jun – 30 Sep (normalmente)Izmir province burns nearly every summer, usually in the pine hills between the city and the peninsula.81
- Cefalonia 🇬🇷 GreciaWildfire season · 15 Jun – 30 SepThe 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 🇹🇷 TurquíaWildfire season · 15 Jun – 30 Sep (normalmente)The pine slopes behind the town burn in most bad summers, and Manavgat an hour west lost villages in 2021.80
- Parque nacional de Mesa Verde 🇺🇸 Estados UnidosWildfire season · 1 Jun – 15 Jul (normalmente)The dry weeks before the monsoon are when the mesa burns; fires have closed the whole park more than once.78
- Santiago de Chile 🇨🇱 ChileWinter smog episodes · 1 May – 31 Ago (normalmente)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
…y 3 más en junio.
Temporada de humo en julio
- Vancouver 🇨🇦 CanadáWildfire smoke risk · 15 Jul – 15 Sep (normalmente)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 🇧🇷 BrasilDry season and burn-offs · 1 Jul – 30 Sep (normalmente)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 🇺🇸 Estados UnidosFire season · 15 Jul – 1 Nov (normalmente)The Ventana wilderness burns regularly and a bad fire closes the highway, the state parks and the campgrounds at once.94
- Fairbanks 🇺🇸 Estados UnidosInterior wildfire smoke · 10 Jun – 20 Ago (normalmente)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 🇺🇸 Estados UnidosInterior wildfire smoke · 1 Jun – 15 Ago (normalmente)In a dry summer the smoke from interior and Susitna valley fires settles over the bowl for days and the mountains vanish.93
- Cuchillo amarillo 🇨🇦 CanadáWildfire smoke · 1 Jul – 31 Ago (normalmente)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 Jun – 30 Sep (normalmente)Monchique burns badly every few summers and the smoke reaches the coast on a north wind.88
- Santa Cruz de la Sierra 🇧🇴 BoliviaBurning season smoke · 15 Jul – 31 Oct (normalmente)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 Jul – 30 SepThe 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 Jun – 30 Sep (normalmente)The serra behind the coast burns most summers and the smoke drifts down to the lagoon on the wrong wind.86
- Marbella 🇪🇸 EspañaFire season in the sierra · 1 Jun – 15 OctAndalusia's declared high-risk fire period.85
- Knysna 🇿🇦 SudáfricaBerg wind fire risk · 1 May – 30 Nov (normalmente)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 🇺🇸 Estados UnidosWildfire smoke season · 1 Jul – 20 Sep (normalmente)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 🇫🇷 FranciaFire risk and closed massifs · 15 Jun – 30 Sep (normalmente)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 Jun – 30 Sep (normalmente)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 🇺🇸 Estados UnidosWildfire smoke season · 15 Jul – 30 Sep (normalmente)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 Jun – 30 Sep (normalmente)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 🇺🇸 Estados UnidosFire restrictions and smoke · 1 May – 10 Jul (normalmente)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 🇨🇦 CanadáWildfire smoke season · 10 Jul – 15 Sep (normalmente)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
- Niza 🇫🇷 FranciaForest access closures · 15 Jun – 30 Sep (normalmente)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
- Parque nacional de Yosemite 🇺🇸 Estados UnidosWildfire smoke · 15 Jul – 30 Sep (normalmente)Late-summer fires in and around the Sierra fill the valley with smoke that sits between the walls for days.82
- Whistler 🇨🇦 CanadáWildfire smoke · 20 Jul – 10 Sep (normalmente)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
- Málaga 🇪🇸 EspañaWildfire season · 15 Jun – 15 Oct (normalmente)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 🇺🇸 Estados UnidosWildfire smoke and ozone · 15 Jun – 15 Sep (normalmente)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 🇺🇸 Estados UnidosWildfire smoke · 15 Jul – 15 Sep (normalmente)Late-summer smoke from fires across Montana, Idaho and Canada settles into the valley and can hold for a week.81
…y 36 más en julio.
Temporada de humo en agosto
- Seattle 🇺🇸 Estados UnidosWildfire smoke · 1 Ago – 20 Sep (normalmente)Late summer smoke from fires in eastern Washington, Oregon or British Columbia settles into the basin and can hold for days.95
- Vancouver 🇨🇦 CanadáWildfire smoke risk · 15 Jul – 15 Sep (normalmente)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 🇺🇸 Estados UnidosFire season · 15 Jul – 1 Nov (normalmente)The Ventana wilderness burns regularly and a bad fire closes the highway, the state parks and the campgrounds at once.92
- Brasilia 🇧🇷 BrasilDry season and burn-offs · 1 Jul – 30 Sep (normalmente)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 🇺🇸 Estados UnidosWildfire season · 1 Ago – 31 Oct (normalmente)Late summer and autumn are when Northern California burns, and 2017 and 2020 both cost the valley part of a vintage.90
- Portland 🇺🇸 Estados UnidosWildfire smoke · 1 Ago – 20 Sep (normalmente)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 🇺🇸 Estados UnidosWildfire smoke season · 1 Jul – 20 Sep (normalmente)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 🇺🇸 Estados UnidosWildfire smoke season · 15 Jul – 30 Sep (normalmente)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 Jun – 30 Sep (normalmente)Monchique burns badly every few summers and the smoke reaches the coast on a north wind.87
- Cuchillo amarillo 🇨🇦 CanadáWildfire smoke · 1 Jul – 31 Ago (normalmente)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 🇿🇦 SudáfricaBerg wind fire risk · 1 May – 30 Nov (normalmente)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 Jun – 30 Sep (normalmente)The serra behind the coast burns most summers and the smoke drifts down to the lagoon on the wrong wind.85
- Kelowna 🇨🇦 CanadáWildfire smoke season · 10 Jul – 15 Sep (normalmente)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 🇦🇷 ArgentinaSmoke off the delta · 15 Jul – 31 Oct (normalmente)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 Jul – 30 SepThe 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 🇺🇸 Estados UnidosWildfire smoke and ozone · 15 Jun – 15 Sep (normalmente)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 🇺🇸 Estados UnidosWildfire smoke · 15 Jul – 15 Sep (normalmente)Late-summer smoke from fires across Montana, Idaho and Canada settles into the valley and can hold for a week.83
- Anchorage 🇺🇸 Estados UnidosInterior wildfire smoke · 1 Jun – 15 Ago (normalmente)In a dry summer the smoke from interior and Susitna valley fires settles over the bowl for days and the mountains vanish.83
- Ajaccio 🇫🇷 FranciaFire risk and closed massifs · 15 Jun – 30 Sep (normalmente)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 🇧🇴 BoliviaBurning season smoke · 15 Jul – 31 Oct (normalmente)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 Jun – 30 Sep (normalmente)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 🇺🇸 Estados UnidosWildfire smoke · 1 Jul – 30 Sep (normalmente)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 🇧🇷 BrasilWildfire season · 1 Ago – 30 Nov (normalmente)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
- Parque nacional volcánico Lassen 🇺🇸 Estados UnidosWildfire smoke season · 1 Ago – 5 Oct (normalmente)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 🇪🇸 EspañaFire season in the sierra · 1 Jun – 15 OctAndalusia's declared high-risk fire period.82
…y 48 más en agosto.
Temporada de humo en septiembre
- Portland 🇺🇸 Estados UnidosWildfire smoke · 1 Ago – 20 Sep (normalmente)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 🇺🇸 Estados UnidosWildfire smoke season · 1 Jul – 20 Sep (normalmente)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 🇨🇦 CanadáWildfire smoke season · 10 Jul – 15 Sep (normalmente)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 Bárbara 🇺🇸 Estados UnidosSundowner wind and fire season · 15 Sep – 15 Dic (normalmente)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 🇺🇸 Estados UnidosWildfire smoke season · 15 Jul – 20 Sep (normalmente)The same valley that traps winter exhaust traps summer smoke drifting in from the Great Basin and California.92
- Bend 🇺🇸 Estados UnidosWildfire smoke season · 1 Jul – 20 Sep (normalmente)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 🇺🇸 Estados UnidosFire season · 15 Jul – 1 Nov (normalmente)The Ventana wilderness burns regularly and a bad fire closes the highway, the state parks and the campgrounds at once.91
- Rosario 🇦🇷 ArgentinaSmoke off the delta · 15 Jul – 31 Oct (normalmente)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
- Calcídica 🇬🇷 GreciaWildfire season · 15 Jun – 30 SepThe pine forest that runs down to the beaches is what makes this coast and what burns on it.91
- Reno 🇺🇸 Estados UnidosWildfire smoke · 1 Jul – 30 Sep (normalmente)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 🇺🇸 Estados UnidosWildfire smoke and ozone · 15 Jun – 15 Sep (normalmente)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 🇺🇸 Estados UnidosSanta Ana wind and fire season · 15 Sep – 15 Dic (normalmente)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 Jun – 30 Sep (normalmente)Monchique burns badly every few summers and the smoke reaches the coast on a north wind.90
- Faro 🇵🇹 PortugalWildfire season inland · 15 Jun – 30 Sep (normalmente)The serra behind the coast burns most summers and the smoke drifts down to the lagoon on the wrong wind.90
- Niza 🇫🇷 FranciaForest access closures · 15 Jun – 30 Sep (normalmente)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 🇺🇸 Estados UnidosWildfire smoke · 1 Ago – 20 Sep (normalmente)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 Jul – 30 SepThe 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 Jun – 30 Sep (normalmente)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 🇺🇸 Estados UnidosWildfire season · 1 Ago – 31 Oct (normalmente)Late summer and autumn are when Northern California burns, and 2017 and 2020 both cost the valley part of a vintage.88
- Marbella 🇪🇸 EspañaFire season in the sierra · 1 Jun – 15 OctAndalusia's declared high-risk fire period.88
- Ajaccio 🇫🇷 FranciaFire risk and closed massifs · 15 Jun – 30 Sep (normalmente)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 🇿🇦 SudáfricaBerg wind fire risk · 1 May – 30 Nov (normalmente)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 🇺🇸 Estados UnidosWildfire smoke · 15 Jul – 15 Sep (normalmente)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 Jun – 30 Sep (normalmente)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 🇺🇸 Estados UnidosWildfire smoke season · 15 Jul – 15 Oct (normalmente)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
…y 47 más en septiembre.
Temporada de humo en octubre
- Santa Bárbara 🇺🇸 Estados UnidosSundowner wind and fire season · 15 Sep – 15 Dic (normalmente)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 🇺🇸 Estados UnidosSanta Ana wind and fire season · 15 Sep – 15 Dic (normalmente)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 🇮🇹 ItaliaSardinian fire season · 1 Jun – 15 OctThe regional fire campaign runs through summer and the hills either side of the city carry the risk.92
- Knysna 🇿🇦 SudáfricaBerg wind fire risk · 1 May – 30 Nov (normalmente)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 🇦🇷 ArgentinaSmoke off the delta · 15 Jul – 31 Oct (normalmente)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 🇺🇸 Estados UnidosFire season · 15 Jul – 1 Nov (normalmente)The Ventana wilderness burns regularly and a bad fire closes the highway, the state parks and the campgrounds at once.90
- Alguer 🇮🇹 ItaliaSardinian fire season · 1 Jun – 15 OctThe regional fire campaign runs all summer and the worst days are the ones when the maestrale is up.90
- Sacramento 🇺🇸 Estados UnidosWildfire smoke season · 15 Jul – 15 Oct (normalmente)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 Ángeles 🇺🇸 Estados UnidosSanta Ana wind and fire season · 15 Sep – 15 Dic (normalmente)Offshore winds arrive over vegetation that has had no rain since spring, and the fire risk peaks before the first storms.89
- Málaga 🇪🇸 EspañaWildfire season · 15 Jun – 15 Oct (normalmente)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 🇪🇸 EspañaFire season in the sierra · 1 Jun – 15 OctAndalusia's declared high-risk fire period.87
- Napa 🇺🇸 Estados UnidosWildfire season · 1 Ago – 31 Oct (normalmente)Late summer and autumn are when Northern California burns, and 2017 and 2020 both cost the valley part of a vintage.86
- El Cairo 🇪🇬 EgiptoThe black cloud · 1 Oct – 30 Nov (normalmente)Smoke from rice-straw burning in the Delta gets trapped over Cairo by autumn inversions and sits there for days.79
- Katoomba 🇦🇺 AustraliaBushfire season · 1 Oct – 1 Mar (normalmente)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 🇮🇳 IndiaStubble-burning smoke · 5 Oct – 25 Nov (normalmente)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 🇧🇷 BrasilWildfire season · 1 Ago – 30 Nov (normalmente)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 🇮🇳 IndiaSevere air season · 1 Oct – 31 Ene (normalmente)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 🇧🇴 BoliviaBurning season smoke · 15 Jul – 31 Oct (normalmente)Land clearing fires across the lowlands send smoke over the city in the late dry season, worst in dry years.69
- Parque nacional de las Secuoyas 🇺🇸 Estados UnidosWildfire smoke season · 15 Jul – 15 Oct (normalmente)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
- Parque nacional Cañón de los Reyes 🇺🇸 Estados UnidosWildfire smoke season · 1 Ago – 5 Oct (normalmente)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
- Parque nacional volcánico Lassen 🇺🇸 Estados UnidosWildfire smoke season · 1 Ago – 5 Oct (normalmente)Northern California's fire season lands squarely on the best walking weeks, and the Dixie Fire burned most of this park in 2021.63
- Manaos 🇧🇷 BrasilBurning-season smoke · 15 Ago – 15 Nov (normalmente)The end of the dry season is when the forest and pasture around the city burn, and the smoke settles over Manaus.60
- Lago Toba 🇮🇩 IndonesiaSumatran haze · 15 Jul – 15 Oct (normalmente)In a dry year, smoke from land clearing further south on the island drifts north and the caldera rim goes flat and grey.57
- Malaca 🇲🇾 MalasiaHaze season · 1 Ago – 15 Oct (normalmente)Smoke off Sumatra crosses the strait in the drier weeks and the view from the hill goes flat white.55
- Singapur 🇸🇬 SingapurRegional haze risk · 1 Jun – 15 Oct (normalmente)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
…y 8 más en octubre.
Temporada de humo en noviembre
- Ciudad del Cabo 🇿🇦 SudáfricaMountain fire season · 1 Nov – 15 May (normalmente)The fynbos burns most summers, and a bad day closes hiking paths, the cableway and sometimes a suburb's roads.95
- Katmandú 🇳🇵 NepalValley smog season · 15 Nov – 28 Feb (normalmente)Cold air sits in the bowl of the valley and holds in kiln smoke, vehicle exhaust and field burning from the plains.92
- Perth 🇦🇺 AustraliaBushfire season · 15 Nov – 15 Abr (normalmente)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 🇿🇦 SudáfricaBerg wind fire risk · 1 May – 30 Nov (normalmente)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 Ángeles 🇺🇸 Estados UnidosSanta Ana wind and fire season · 15 Sep – 15 Dic (normalmente)Offshore winds arrive over vegetation that has had no rain since spring, and the fire risk peaks before the first storms.91
- San Diego 🇺🇸 Estados UnidosSanta Ana wind and fire season · 15 Sep – 15 Dic (normalmente)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
- Isla Canguro 🇦🇺 AustraliaFire danger season closures · 15 Nov – 15 Abr (normalmente)National parks here close on catastrophic fire danger days, which lands squarely in the summer holidays.91
- Margaret River 🇦🇺 AustraliaBushfire and burn-off season · 15 Nov – 15 Abr (normalmente)Summer brings total fire bans and closed forest tracks, and the autumn prescribed burns put smoke through the valleys on still days.90
- El Cairo 🇪🇬 EgiptoThe black cloud · 1 Oct – 30 Nov (normalmente)Smoke from rice-straw burning in the Delta gets trapped over Cairo by autumn inversions and sits there for days.88
- Sídney 🇦🇺 AustraliaBushfire smoke risk · 1 Nov – 28 Feb (normalmente)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 🇮🇳 IndiaStubble-burning smoke · 5 Oct – 25 Nov (normalmente)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 Bárbara 🇺🇸 Estados UnidosSundowner wind and fire season · 15 Sep – 15 Dic (normalmente)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 🇮🇳 IndiaSevere air season · 1 Oct – 31 Ene (normalmente)Emergency pollution restrictions run from 1 October: construction bans, diesel-vehicle limits and schools moved online when it escalates.84
- Big Sur 🇺🇸 Estados UnidosFire season · 15 Jul – 1 Nov (normalmente)The Ventana wilderness burns regularly and a bad fire closes the highway, the state parks and the campgrounds at once.82
- Katoomba 🇦🇺 AustraliaBushfire season · 1 Oct – 1 Mar (normalmente)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 🇧🇷 BrasilWildfire season · 1 Ago – 30 Nov (normalmente)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
- Manaos 🇧🇷 BrasilBurning-season smoke · 15 Ago – 15 Nov (normalmente)The end of the dry season is when the forest and pasture around the city burn, and the smoke settles over Manaus.57
- Alma Ata 🇰🇿 KazajistánWinter smog · 15 Nov – 1 Mar (normalmente)Coal heating and a valley inversion pin the smoke over the city for weeks at a time once the cold sets in.56
- Ulán Bator 🇲🇳 MongoliaWinter smog · 1 Nov – 31 MarRaw 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
Temporada de humo en diciembre
- Margaret River 🇦🇺 AustraliaBushfire and burn-off season · 15 Nov – 15 Abr (normalmente)Summer brings total fire bans and closed forest tracks, and the autumn prescribed burns put smoke through the valleys on still days.96
- Isla Canguro 🇦🇺 AustraliaFire danger season closures · 15 Nov – 15 Abr (normalmente)National parks here close on catastrophic fire danger days, which lands squarely in the summer holidays.94
- Melbourne 🇦🇺 AustraliaBushfire season · 1 Dic – 15 Mar (normalmente)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 🇨🇱 ChileFire season in the hills · 15 Dic – 15 Abr (normalmente)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
- Ciudad del Cabo 🇿🇦 SudáfricaMountain fire season · 1 Nov – 15 May (normalmente)The fynbos burns most summers, and a bad day closes hiking paths, the cableway and sometimes a suburb's roads.91
- Hobart 🇦🇺 AustraliaBushfire season · 1 Dic – 15 Mar (normalmente)A dry spell in the highlands can put smoke over the Derwent for days and close the walking tracks around the city.90
- Delhi 🇮🇳 IndiaSevere air season · 1 Oct – 31 Ene (normalmente)Emergency pollution restrictions run from 1 October: construction bans, diesel-vehicle limits and schools moved online when it escalates.88
- Sídney 🇦🇺 AustraliaBushfire smoke risk · 1 Nov – 28 Feb (normalmente)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 🇦🇺 AustraliaBushfire season · 15 Nov – 15 Abr (normalmente)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 🇦🇺 AustraliaBushfire season · 1 Oct – 1 Mar (normalmente)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 🇺🇸 Estados UnidosSanta Ana wind and fire season · 15 Sep – 15 Dic (normalmente)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 Ángeles 🇺🇸 Estados UnidosSanta Ana wind and fire season · 15 Sep – 15 Dic (normalmente)Offshore winds arrive over vegetation that has had no rain since spring, and the fire risk peaks before the first storms.81
- Katmandú 🇳🇵 NepalValley smog season · 15 Nov – 28 Feb (normalmente)Cold air sits in the bowl of the valley and holds in kiln smoke, vehicle exhaust and field burning from the plains.80
- Santa Bárbara 🇺🇸 Estados UnidosSundowner wind and fire season · 15 Sep – 15 Dic (normalmente)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 🇦🇷 ArgentinaPatagonian fire season · 1 Dic – 31 Mar (normalmente)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 🇺🇸 Estados UnidosWinter inversion · 15 Dic – 20 Feb (normalmente)Cold air settles in the valley under a lid of warm air and the exhaust has nowhere to go, sometimes for a fortnight.53
- Alma Ata 🇰🇿 KazajistánWinter smog · 15 Nov – 1 Mar (normalmente)Coal heating and a valley inversion pin the smoke over the city for weeks at a time once the cold sets in.42
- Ulán Bator 🇲🇳 MongoliaWinter smog · 1 Nov – 31 MarRaw 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