Contra Costa County air quality
Updated 10. 04. 17:00
The data may not be up to date.
Current AQI
US EPA scale · observed at 17:00
73
ModerateUnusually sensitive people should limit prolonged outdoor exertion.
Pollutants
Current concentrations, µg/m³
| Pollutant | Concentration | Description |
|---|---|---|
| PM2.5 | 9,7 µg/m³ | Fine particles ≤ 2.5 µm |
| PM10 | 10,5 µg/m³ | Particles ≤ 10 µm |
| O₃ | 153 µg/m³ | Ozone |
| NO₂ | 9 µg/m³ | Nitrogen dioxide |
| SO₂ | 3,3 µg/m³ | Sulphur dioxide |
| CO | 183 µg/m³ | Carbon monoxide |