SeasonMapChicago vs Pittsburgh: which is better, month by month
Pittsburgh beats Chicago in 3 of 12 months — its lead peaks in October (78 vs 73) — while Chicago wins July; they are within 3 points in the other 8 months.
Each place is scored under the lens that suits its type. Comfort is SeasonMap's 0–100 estimate from ERA5 climate normals, not a forecast.
Chicago vs Pittsburgh — all 12 months
| Month | Chicago | Pittsburgh | Winner | Gap |
|---|---|---|---|---|
| January | 40Ffreezing, a little rain, clean air | 43Ffreezing, rainy, clean air | Tie | 3 |
| February | 49Ffreezing, a little rain, clean air | 52Dcold, rainy, clean air | Tie | 3 |
| March | 64Ccold, a little rain, clean air | 64Ccold, rainy, clean air | Tie | 0 |
| April | 71Bcool, rainy, clean air | 75Bcool, rainy, clean air | Pittsburgh | 4 |
| May | 83Anice, rainy, muggy air | 87Anice, rainy, muggy air | Pittsburgh | 4 |
| June | 86Awarm, rainy | 84Ahot, rainy, muggy air | Tie | 2 |
| July | 76Bhot, rainy, muggy air | 72Bhot, rainy, muggy air | Chicago | 4 |
| August | 81Ahot, a little rain | 80Ahot, rainy, muggy air | Tie | 1 |
| September | 91Swarm, a little rain, clean air | 89Awarm, rainy, clean air | Tie | 2 |
| October | 73Bnice, rainy, clean air | 78Bnice, rainy, clean air | Pittsburgh | 5 |
| November | 62Ccold, a little rain, clean air | 62Ccold, a little rain, clean air | Tie | 0 |
| December | 46Fcold, a little rain, clean air | 49Fcold, a little rain, clean air | Tie | 3 |
A month is a tie when the two are within 3 points. The widest gap is October (73 vs 78). Tap a month for that month's temperature, rain, humidity and air quality side by side.