Bidhannagar air quality · Kolkata, West Bengal
Visibility may be dangerously low; drive slowly or not at all
US AQI 328 (Hazardous) at the WBPCB monitor in Bidhannagar, also known as Salt Lake, Kolkata, the 1st highest of 7 Kolkata monitors reporting. India's official NAQI (CPCB) 392 (Very Poor). Main pollutant: PM2.5.
Updated
Last 24 hours: worst 328 at 10 pm yesterday, best 62 at 9 am yesterday (US AQI)
Pollutants at Bidhannagar
- PM2.5 · µg/m³23915.9× WHO limit
- PM10 · µg/m³3026.7× WHO limit
- NO₂ · µg/m³64.12.6× WHO limit
- O₃ · µg/m³14.0
- SO₂ · µg/m³9.3Under WHO limit
- CO · mg/m³1.47
This hour's readings at this monitor. WHO multiples use the 2021 24-hour guidelines.
Where Bidhannagar ranks in Kolkata
- 1stmost polluted of 7 Kolkata monitors right now
- 109average US AQI, last 30 days
- 206Kolkata's city figure now
Most polluted right now: Bidhannagar 328 · Rabindra Bharati University 252 · Jadavpur 204 · Rabindra Sarobar 187 · Ballygunge 187.
Is it safe outside in Bidhannagar right now?
Health warning of emergency conditions: everyone is more likely to be affected.
Walking and commuting
AvoidStay indoors. Postpone non-essential trips.
Running and jogging
AvoidSkip strenuous exercise, even indoors if the air inside is not filtered.
Cycling
AvoidAvoid riding outdoors.
Children playing outside
AvoidKeep children indoors in a room with filtered air.
Older adults and heart or lung conditions
AvoidStay indoors with filtered air and seek care if symptoms appear.
Open windows
AvoidSeal gaps around doors and windows if you can.
Mask outdoors
EssentialN95 or FFP2 mask essential outdoors.
Air purifier indoors
EssentialRun a HEPA purifier on high in a closed room.
Based on the US EPA Air Quality Guide, applied to the current US AQI category. If you have symptoms, follow your doctor's advice.
When the air is worst in Bidhannagar
Last 7 days, India timeOver the last 7 days, the air at this monitor was worst from 9 pm to midnight (average US AQI 216) and cleanest from 3 pm to 6 pm (121). Plan walks, runs and open windows for the cleaner hours.
Bidhannagar air quality, last 24 hours
Hourly US AQI, 23 of 24 hours, India timeIn the last 24 hours the US AQI at this monitor was highest at 10 pm yesterday (328, Hazardous) and lowest at 9 am yesterday (62, Moderate).
Bidhannagar air quality, last 30 days
Daily average, 27 days- 109average US AQI
- 180worst day, 7 November
- 39cleanest day, 30 October
- 3days above 150 (Unhealthy or worse)
Nearby monitors
All of KolkataKolkata and Howrah's worst monitors this winter →
Bidhannagar air quality: common questions
What is the AQI in Bidhannagar right now?
The US AQI at the WBPCB monitor in Bidhannagar, Kolkata is 328 (Hazardous), the 1st highest of 7 Kolkata monitors reporting. Over the last 24 hours it ranged from 62 (9 am yesterday) to 328 (10 pm yesterday). The main pollutant is PM2.5. The same air reads India's official NAQI (CPCB) 392 (Very Poor).
What time is the air worst in Bidhannagar?
Over the last 7 days, from 9 pm to midnight India time, when the monitor averaged 216. The cleanest stretch was 3 pm to 6 pm, at 121.
How has Bidhannagar's air been over the last 30 days?
The monitor averaged a US AQI of 109 over 27 days with data. The worst day was 7 November at 180 and the cleanest 30 October at 39. 3 days were above 150 (Unhealthy or worse).
Where does Bidhannagar's air quality data come from?
From the continuous monitoring station run by the West Bengal Pollution Control Board (WBPCB) in CPCB's national network. Good Air shows the US EPA AQI worked out from those readings, and CPCB's own National Air Quality Index (NAQI) beside it. Good Air does not estimate or adjust the readings. Bidhannagar is also known as Salt Lake.
Source: West Bengal Pollution Control Board (WBPCB), via CPCB's national monitoring network. One monitor shows the air around it, which can differ from a few streets away. Readings are published by the monitoring agency and may be revised.