Saint-Louis air quality
Updated 19/10, 03:01
The data may not be up to date.
Current AQI
US EPA scale · observed at 03:00
78
ModerateUnusually sensitive people should limit prolonged outdoor exertion.
Pollutants
Current concentrations, µg/m³
| Pollutant | Concentration | Description |
|---|---|---|
| PM2.5 | 63,3 µg/m³ | Fine particles ≤ 2.5 µm |
| PM10 | 133,6 µg/m³ | Particles ≤ 10 µm |
| O₃ | 39 µg/m³ | Ozone |
| NO₂ | 0,8 µg/m³ | Nitrogen dioxide |
| SO₂ | 0,3 µg/m³ | Sulphur dioxide |
| CO | 97 µg/m³ | Carbon monoxide |