San Marcos air quality
Updated 20/10, 21:00
The data may not be up to date.
Current AQI
US EPA scale · observed at 21:00
21
GoodAir quality is good; enjoy outdoor activities.
Pollutants
Current concentrations, µg/m³
| Pollutant | Concentration | Description |
|---|---|---|
| PM2.5 | 4,5 µg/m³ | Fine particles ≤ 2.5 µm |
| PM10 | 4,6 µg/m³ | Particles ≤ 10 µm |
| O₃ | 30 µg/m³ | Ozone |
| NO₂ | 5,8 µg/m³ | Nitrogen dioxide |
| SO₂ | 1,5 µg/m³ | Sulphur dioxide |
| CO | 186 µg/m³ | Carbon monoxide |