Worst now
Illinois air quality today
Chicago Illinois63
ModerateUS AQI
After rain, readings often drop sharply within an hour
Updated · AirNow
8 cities in Illinois are reporting. Median US AQI 29 (Good). Chicago is at 63 (Moderate); Carbondale is cleanest at 19.
- Good 6
- Moderate 2
| # | City | US AQI |
|---|---|---|
| 1 | Chicago | 63 |
| 2 | Springfield | 55 |
| 3 | Joliet | 32 |
| 4 | Rockford | 30 |
| 5 | Champaign | 27 |
| 6 | Peoria | 26 |
| 7 | Quincy | 23 |
| 8 | Carbondale | 19 |
Updated 9:40 am ET. Source: US EPA AirNow.