Kolkata air quality
Updated 16/10, 10:30
The data may not be up to date.
Current AQI
US EPA scale · observed at 10:30
127
Unhealthy for sensitive groupsChildren, older adults and people with heart or lung disease should reduce outdoor activity.
Pollutants
Current concentrations, µg/m³
| Pollutant | Concentration | Description |
|---|---|---|
| PM2.5 | 42,4 µg/m³ | Fine particles ≤ 2.5 µm |
| PM10 | 43,7 µg/m³ | Particles ≤ 10 µm |
| O₃ | 213 µg/m³ | Ozone |
| NO₂ | 6,7 µg/m³ | Nitrogen dioxide |
| SO₂ | 27 µg/m³ | Sulphur dioxide |
| CO | 545 µg/m³ | Carbon monoxide |
AQI, next 21 hours
Show data table
| Time | AQI | Level |
|---|---|---|
| 13:30 | 141 | Unhealthy for sensitive groups |
| 14:30 | 175 | Unhealthy |
| 15:30 | 200 | Unhealthy |
| 16:30 | 207 | Very unhealthy |
| 17:30 | 207 | Very unhealthy |
| 18:30 | 204 | Very unhealthy |
| 19:30 | 197 | Unhealthy |
| 20:30 | 180 | Unhealthy |
| 21:30 | 161 | Unhealthy |
| 22:30 | 135 | Unhealthy for sensitive groups |
| 23:30 | 137 | Unhealthy for sensitive groups |
| 00:30 | 139 | Unhealthy for sensitive groups |
| 01:30 | 142 | Unhealthy for sensitive groups |
| 02:30 | 145 | Unhealthy for sensitive groups |
| 03:30 | 148 | Unhealthy for sensitive groups |
| 04:30 | 150 | Unhealthy for sensitive groups |
| 05:30 | 151 | Unhealthy |
| 06:30 | 151 | Unhealthy |
| 07:30 | 152 | Unhealthy |
| 08:30 | 153 | Unhealthy |
| 09:30 | 153 | Unhealthy |