Viana do Castelo District air quality
Updated 01/10, 01:35
The data may not be up to date.
Current AQI
US EPA scale · observed at 01:00
31
GoodAir quality is good; enjoy outdoor activities.
Pollutants
Current concentrations, µg/m³
| Pollutant | Concentration | Description |
|---|---|---|
| PM2.5 | 4,9 µg/m³ | Fine particles ≤ 2.5 µm |
| PM10 | 14,6 µg/m³ | Particles ≤ 10 µm |
| O₃ | 57 µg/m³ | Ozone |
| NO₂ | 5 µg/m³ | Nitrogen dioxide |
| SO₂ | 0,4 µg/m³ | Sulphur dioxide |
| CO | 165 µg/m³ | Carbon monoxide |
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