Air Quality / South and West Suburbs (Chicago)
South and West Suburbs (Chicago)
Illinois — EPA AirNow monitoring station
Current AQI (OZONE)
Good8/26/2026, 5:00:00 PM
Recent Readings
| Time | Pollutant | AQI | Category | Type |
|---|---|---|---|---|
| 8/26/2026, 5:00:00 PM | OZONE | Good | forecast | |
| 8/26/2026, 5:00:00 PM | PM2.5 | Moderate | forecast | |
| 8/25/2026, 5:00:00 PM | OZONE | Good | forecast | |
| 8/25/2026, 5:00:00 PM | PM2.5 | Moderate | forecast | |
| 8/24/2026, 7:00:00 PM | OZONE | 31 | Good | observation |
| 8/24/2026, 7:00:00 PM | PM2.5 | 36 | Good | observation |
| 8/24/2026, 6:00:00 PM | PM2.5 | 39 | Good | observation |
| 8/24/2026, 6:00:00 PM | OZONE | 27 | Good | observation |
| 8/24/2026, 5:00:00 PM | OZONE | 22 | Good | observation |
| 8/24/2026, 5:00:00 PM | PM2.5 | 43 | Good | observation |
| 8/24/2026, 5:00:00 PM | OZONE | Good | forecast | |
| 8/24/2026, 5:00:00 PM | PM2.5 | Moderate | forecast | |
| 8/24/2026, 4:00:00 PM | PM2.5 | 52 | Moderate | observation |
| 8/24/2026, 4:00:00 PM | OZONE | 18 | Good | observation |
| 8/24/2026, 3:00:00 PM | PM2.5 | 57 | Moderate | observation |
| 8/24/2026, 3:00:00 PM | OZONE | 14 | Good | observation |
| 8/24/2026, 2:00:00 PM | OZONE | 10 | Good | observation |
| 8/24/2026, 2:00:00 PM | PM2.5 | 64 | Moderate | observation |
| 8/24/2026, 1:00:00 PM | OZONE | 8 | Good | observation |
| 8/24/2026, 1:00:00 PM | PM2.5 | 67 | Moderate | observation |
| 8/24/2026, 12:00:00 PM | PM2.5 | 68 | Moderate | observation |
| 8/24/2026, 12:00:00 PM | OZONE | 8 | Good | observation |
| 8/24/2026, 11:00:00 AM | PM2.5 | 68 | Moderate | observation |
| 8/24/2026, 11:00:00 AM | OZONE | 8 | Good | observation |
| 8/24/2026, 10:00:00 AM | PM2.5 | 69 | Moderate | observation |
| 8/24/2026, 10:00:00 AM | OZONE | 8 | Good | observation |
| 8/24/2026, 9:00:00 AM | PM10 | 22 | Good | observation |
| 8/24/2026, 9:00:00 AM | OZONE | 8 | Good | observation |
| 8/24/2026, 9:00:00 AM | PM2.5 | 69 | Moderate | observation |
| 8/24/2026, 8:00:00 AM | OZONE | 7 | Good | observation |
| 8/24/2026, 8:00:00 AM | PM2.5 | 70 | Moderate | observation |
| 8/24/2026, 8:00:00 AM | PM10 | 22 | Good | observation |
| 8/24/2026, 7:00:00 AM | OZONE | 8 | Good | observation |
| 8/24/2026, 7:00:00 AM | PM2.5 | 70 | Moderate | observation |
| 8/24/2026, 6:00:00 AM | PM2.5 | 73 | Moderate | observation |
| 8/24/2026, 6:00:00 AM | OZONE | 9 | Good | observation |
| 8/24/2026, 5:00:00 AM | PM2.5 | 70 | Moderate | observation |
| 8/24/2026, 5:00:00 AM | OZONE | 12 | Good | observation |
| 8/24/2026, 4:00:00 AM | PM2.5 | 68 | Moderate | observation |
| 8/24/2026, 4:00:00 AM | OZONE | 16 | Good | observation |
| 8/24/2026, 3:00:00 AM | OZONE | 19 | Good | observation |
| 8/24/2026, 3:00:00 AM | PM2.5 | 67 | Moderate | observation |
| 8/24/2026, 2:00:00 AM | OZONE | 23 | Good | observation |
| 8/24/2026, 2:00:00 AM | PM2.5 | 66 | Moderate | observation |
| 8/24/2026, 1:00:00 AM | PM2.5 | 68 | Moderate | observation |
| 8/24/2026, 1:00:00 AM | OZONE | 26 | Good | observation |
| 8/24/2026, 12:00:00 AM | PM2.5 | 70 | Moderate | observation |
| 8/24/2026, 12:00:00 AM | OZONE | 28 | Good | observation |
| 8/23/2026, 11:00:00 PM | OZONE | 30 | Good | observation |
| 8/23/2026, 11:00:00 PM | PM2.5 | 77 | Moderate | observation |
Nearby Stations
Current AirNow data are preliminary and may be revised. Source: EPA AirNow and participating air quality agencies.