Kolkata air quality
Updated 12/10, 13:30
The data may not be up to date.
Current AQI
US EPA scale · observed at 13:30
178
UnhealthyEveryone should reduce outdoor activity; sensitive groups should stay indoors.
Pollutants
Current concentrations, µg/m³
| Pollutant | Concentration | Description |
|---|---|---|
| PM2.5 | 64,7 µg/m³ | Fine particles ≤ 2.5 µm |
| PM10 | 70,8 µg/m³ | Particles ≤ 10 µm |
| O₃ | 230 µg/m³ | Ozone |
| NO₂ | 2,3 µg/m³ | Nitrogen dioxide |
| SO₂ | 21 µg/m³ | Sulphur dioxide |
| CO | 470 µg/m³ | Carbon monoxide |
AQI, next 4 hours
Show data table
| Time | AQI | Level |
|---|---|---|
| 09:30 | 182 | Unhealthy |
| 10:30 | 182 | Unhealthy |
| 11:30 | 182 | Unhealthy |
| 12:30 | 181 | Unhealthy |