West Bengal Air Quality
Capital: Kolkata · Population: 99M · 22 monitoring stations
148
Moderate
2024 Annual Avg
148
Annual AQI
Rank #10 in India
61 μg/m³
PM2.5
12× WHO limit
250
Winter Peak
Oct–Feb average
65
Summer Low
Jul–Sep average
Health Advisory — Moderate
Moderate pollution. People with respiratory or heart conditions should limit prolonged outdoor exertion.
Major Cities in West Bengal
Live AQI updated every 30 minutes from WAQI. 2024 Avg from CPCB annual data.
Air Quality in West Bengal
Kolkata's old industrial base (steel, jute, chemicals) and dense traffic push AQI. Winter fog amplifies PM2.5 concentrations. The Ganges delta geography limits dispersion.
Main Pollution Sources
Seasonal AQI Patterns in West Bengal
Worst season. Temperature inversions, crop burning, and low wind speeds trap pollutants. AQI often exceeds 300 in northern states.
Dust storms and heat raise AQI. Less fog than winter. Industrial activity at peak.
Best air quality of the year. Rain washes out PM2.5 and PM10. AQI typically falls to lowest levels.
Rapidly deteriorating. Crop stubble burning begins in northern states. AQI transitions from good to dangerous.