Kolkata Air Quality — Live AQI & Gangetic Plain Outlook

Kolkata experiences strong seasonal swings, with winter PM2.5 episodes driven by inversion traps, biomass burning, and congested diesel traffic across the Gangetic plain. Fine particles often dominate health risk during calm, cool nights and mornings.

Pre-monsoon heat can raise dust and secondary particle formation, while monsoon rains typically deliver the year's cleanest weeks. Festival periods and neighbourhood burning can cause sharp short-term spikes.

Daily AQI checks help families plan school travel and outdoor markets during haze season. Sensitive groups benefit most from exercising after rain and away from major traffic corridors.