Chicago air quality
Updated 12/10, 23:01
The data may not be up to date.
Current AQI
US EPA scale · observed at 23:00
54
ModerateUnusually sensitive people should limit prolonged outdoor exertion.
Pollutants
Current concentrations, µg/m³
| Pollutant | Concentration | Description |
|---|---|---|
| PM2.5 | 7,7 µg/m³ | Fine particles ≤ 2.5 µm |
| PM10 | 8 µg/m³ | Particles ≤ 10 µm |
| O₃ | 79 µg/m³ | Ozone |
| NO₂ | 19,4 µg/m³ | Nitrogen dioxide |
| SO₂ | 2,2 µg/m³ | Sulphur dioxide |
| CO | 160 µg/m³ | Carbon monoxide |
AQI, next 15 hours
Show data table
| Time | AQI | Level |
|---|---|---|
| 08:00 | 53 | Moderate |
| 09:00 | 52 | Moderate |
| 10:00 | 51 | Moderate |
| 11:00 | 51 | Moderate |
| 12:00 | 51 | Moderate |
| 13:00 | 50 | Good |
| 14:00 | 50 | Good |
| 15:00 | 49 | Good |
| 16:00 | 48 | Good |
| 17:00 | 47 | Good |
| 18:00 | 46 | Good |
| 19:00 | 46 | Good |
| 20:00 | 46 | Good |
| 21:00 | 47 | Good |
| 22:00 | 48 | Good |