Kolkata air quality · West Bengal, India
Wind speed and direction shape what you breathe right now
NAQI 77 (Satisfactory) in Kolkata, from 7 CPCB monitoring stations. On the US scale that is 111 (Unhealthy for Sensitive Groups).
Updated
Pollutants in Kolkata
- PM2.5 · µg/m³39.72.6× WHO limit
- PM10 · µg/m³77.01.7× WHO limit
- NO₂ · µg/m³33.6Under WHO limit
- O₃ · µg/m³40.6
- SO₂ · µg/m³9.6Under WHO limit
- CO · mg/m³0.72
Concentrations averaged across the city's stations. WHO multiples use the 2021 24-hour guidelines.
Is it safe outside in Kolkata right now?
May cause minor breathing discomfort to sensitive people.
Walking and commuting
Go aheadFine for everyone.
Running and jogging
Take careFine for most; unusually sensitive people should ease the pace.
Cycling
Go aheadFine for everyone.
Children playing outside
Go aheadNo limits for most children.
Older adults and heart or lung conditions
Take careWatch for symptoms such as coughing or breathlessness.
Open windows
Go aheadFine to ventilate.
Mask outdoors
Not neededNot needed.
Air purifier indoors
Not neededOptional.
Based on the US EPA Air Quality Guide, applied to the current NAQI category. If you have symptoms, follow your doctor's advice.
What US AQI 101–150 means for your health →
Air quality by area in Kolkata
7 stations, worst first- JadavpurModerate112
- Rabindra Bharati UniversityModerate107
- Rabindra SarobarModerate104
- Fort WilliamSatisfactory88
- BallygungeSatisfactory70
- VictoriaSatisfactory63
- BidhannagarSatisfactory55
Kolkata air quality history
Daily average, 36 days- 78average daily NAQI over 36 days
- 133worst day, 6 October
- 28cleanest day, 23 September
- 0days at Poor or worse
The last 7 days averaged 78, better than the week before (103). 8 of the last 36 days were Good.
Weather in Kolkata
29°C Mainly Clear Sky · Humidity 82% · Wind 0 km/h
| Day | Forecast | Max | Min |
|---|---|---|---|
| Mon 19 | Partly cloudy sky | 33° | 23° |
| Tue 20 | Partly cloudy sky | 33° | 23° |
| Wed 21 | Partly cloudy sky | 33° | 23° |
| Thu 22 | Partly cloudy sky | 32° | 23° |
| Fri 23 | Partly cloudy sky | 32° | 23° |
| Sat 24 | Partly cloudy sky | 33° | 23° |
| Sun 25 | Partly cloudy sky | 33° | 23° |
India Meteorological Department (IMD) city forecast, issued 19 October 2026. All IMD warnings →
Nearby cities
India rankingRelated reading
Kolkata air quality: common questions
What is the AQI in Kolkata right now?
The NAQI in Kolkata is 77 (Satisfactory), based on 7 monitoring stations. On the US AQI scale the same air reads 111 (Unhealthy for Sensitive Groups).
Is it safe to go outside in Kolkata today?
Fine for most people. May cause minor breathing discomfort to sensitive people. For runners: Fine for most; unusually sensitive people should ease the pace.
Which area of Kolkata has the worst air right now?
Jadavpur has the highest reading at 112 (Moderate). Bidhannagar has the lowest at 55, out of 7 stations reporting.
How has air quality in Kolkata been recently?
Over the last 36 days with data, Kolkata averaged NAQI 78. The worst day was 6 October at 133; the cleanest was 23 September at 28. 0 days were at Poor or worse.
How does Kolkata's PM2.5 compare with the WHO guideline?
PM2.5 is 40 µg/m³, about 2.6 times the World Health Organization's 24-hour guideline of 15 µg/m³.
Where does Kolkata's air quality data come from?
From State & Central Pollution Control Board, Government of India · Center for Study of Science, Technology and Policy (CSTEP) · Aurassure's University Clean Air Network, using 7 monitoring stations in and around the city. Good Air does not estimate or adjust these readings.
Source: State & Central Pollution Control Board, Government of India · Center for Study of Science, Technology and Policy (CSTEP) · Aurassure's University Clean Air Network. Readings are published by the monitoring agency and may be revised.