Air quality in Kolkata today
India · Updated Friday 10:30 (local time) · Model data from the Copernicus Atmosphere Monitoring Service
Fair European AQI
Fine for almost everyone.
Pollutants right now
| Pollutant | Value | Level |
|---|---|---|
| PM2.5 | 6 µg/m³ | Good |
| PM10 | 8 µg/m³ | Good |
| NO₂ | 3 µg/m³ | Good |
| O₃ | 79 µg/m³ | Fair |
The pollutant that matters most in Kolkata right now is O₃.
Forecast: next 24 hours
The air in Kolkata should stay good to fair for the next 24 hours. The cleanest hour is expected around Sat 03:30.
| Time | AQI | Level | PM2.5 |
|---|---|---|---|
| Fri 11:30 | 31 | Fair | 6 |
| Fri 14:30 | 28 | Fair | 9 |
| Fri 17:30 | 30 | Fair | 10 |
| Fri 20:30 | 33 | Fair | 12 |
| Fri 23:30 | 27 | Fair | 8 |
| Sat 02:30 | 24 | Fair | 7 |
| Sat 05:30 | 24 | Fair | 7 |
| Sat 08:30 | 26 | Fair | 8 |
The last 30 days
Over the last 30 days the average daily AQI in Kolkata was 51, with 4 day(s) rated poor or worse. The cleanest day was 23 Sept, the most polluted 19 Sept.
Questions and answers
- Is the air in Kolkata good today?
- Right now the European Air Quality Index in Kolkata is 30, which is fair. Fine for almost everyone.
- What pollutes the air in Kolkata?
- At the moment O₃ contributes most to the air quality index in Kolkata. The index takes the worst of fine particles (PM2.5), coarser particles (PM10), nitrogen dioxide, ozone and sulphur dioxide.
- When will the air in Kolkata be cleanest?
- The air in Kolkata should stay good to fair for the next 24 hours. The cleanest hour is expected around Sat 03:30.
- Where does this data come from?
- Wheezair shows model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), served by Open-Meteo: about 11 km resolution in Europe and 40 km elsewhere, updated daily. They are not station measurements, so a busy street can be worse than its city's value.