Kolkata air quality
Updated 17/10, 10:30
The data may not be up to date.
Current AQI
US EPA scale · observed at 10:30
152
UnhealthyEveryone should reduce outdoor activity; sensitive groups should stay indoors.
Pollutants
Current concentrations, µg/m³
| Pollutant | Concentration | Description |
|---|---|---|
| PM2.5 | 47,8 µg/m³ | Fine particles ≤ 2.5 µm |
| PM10 | 49,6 µg/m³ | Particles ≤ 10 µm |
| O₃ | 205 µg/m³ | Ozone |
| NO₂ | 6,4 µg/m³ | Nitrogen dioxide |
| SO₂ | 28,1 µg/m³ | Sulphur dioxide |
| CO | 571 µg/m³ | Carbon monoxide |
AQI, next 7 hours
Show data table
| Time | AQI | Level |
|---|---|---|
| 03:30 | 154 | Unhealthy |
| 04:30 | 154 | Unhealthy |
| 05:30 | 155 | Unhealthy |
| 06:30 | 156 | Unhealthy |
| 07:30 | 157 | Unhealthy |
| 08:30 | 158 | Unhealthy |
| 09:30 | 158 | Unhealthy |