Cook County air quality
Updated 10. 18. 00:00
The data may not be up to date.
Current AQI
US EPA scale · observed at 00:00
23
GoodAir quality is good; enjoy outdoor activities.
Pollutants
Current concentrations, µg/m³
| Pollutant | Concentration | Description |
|---|---|---|
| PM2.5 | 7,6 µg/m³ | Fine particles ≤ 2.5 µm |
| PM10 | 7,7 µg/m³ | Particles ≤ 10 µm |
| O₃ | 33 µg/m³ | Ozone |
| NO₂ | 33,7 µg/m³ | Nitrogen dioxide |
| SO₂ | 2,1 µg/m³ | Sulphur dioxide |
| CO | 165 µg/m³ | Carbon monoxide |
AQI, next 18 hours
Show data table
| Time | AQI | Level |
|---|---|---|
| 06:00 | 31 | Good |
| 07:00 | 32 | Good |
| 08:00 | 33 | Good |
| 09:00 | 34 | Good |
| 10:00 | 35 | Good |
| 11:00 | 36 | Good |
| 12:00 | 36 | Good |
| 13:00 | 37 | Good |
| 14:00 | 37 | Good |
| 15:00 | 38 | Good |
| 16:00 | 38 | Good |
| 17:00 | 38 | Good |
| 18:00 | 38 | Good |
| 19:00 | 39 | Good |
| 20:00 | 39 | Good |
| 21:00 | 39 | Good |
| 22:00 | 40 | Good |
| 23:00 | 40 | Good |