Leiden air quality
Updated 02/10, 04:06
The data may not be up to date.
Current AQI
US EPA scale · observed at 04:00
34
GoodAir quality is good; enjoy outdoor activities.
Pollutants
Current concentrations, µg/m³
| Pollutant | Concentration | Description |
|---|---|---|
| PM2.5 | 7,2 µg/m³ | Fine particles ≤ 2.5 µm |
| PM10 | 12,5 µg/m³ | Particles ≤ 10 µm |
| O₃ | 16 µg/m³ | Ozone |
| NO₂ | 50,8 µg/m³ | Nitrogen dioxide |
| SO₂ | 1,5 µg/m³ | Sulphur dioxide |
| CO | 198 µg/m³ | Carbon monoxide |