Air Quality History for Chicago, United States
Historical PM2.5 and AQI trend from monitoring stations near Chicago, United States.
62
Current AQI
Moderate Station
Moderate Station
Air Quality Index Station
118hPM2.5 Station
118h · 1 stationTemperature GFS model
28ptPrecipitation GFS model
mm/dayDaily Summary Station
| Date | AQI | Range | PM2.5 avg | PM10 avg | Hours | Stations |
|---|---|---|---|---|---|---|
| 2026-07-21 | 34 | 3–99 | 10.3 µg/m³ | 12.1 | 17h | 1 |
| 2026-07-20 | 51 | 23–96 | 14.2 µg/m³ | 16.4 | 24h | 1 |
| 2026-07-19 | 43 | 14–85 | 11.9 µg/m³ | 13.2 | 24h | 1 |
| 2026-07-18 | 13 | 3–32 | 3.2 µg/m³ | 3.7 | 18h | 1 |
| 2026-07-17 | 107 | 22–167 | 39.3 µg/m³ | 48.8 | 24h | 1 |
| 2026-07-16 | 142 | 101–188 | 63.2 µg/m³ | 75.1 | 11h | 1 |