Air Quality in Kolkata

Key Pollution Drivers

• Legacy diesel vehicles and dense traffic near Howrah Bridge and EM Bypass
• Small-scale industries and brick kilns in Howrah and Barrackpore clusters
• Riverine cargo operations and port activity adding sulphur-rich emissions

Seasonal Patterns

• November to February sees widespread smog with weak winds and temperature inversions
• Pre-monsoon nor'westers disperse pollutants but kick up dust ahead of rainfall
• Monsoon humidity sustains higher sulphur dioxide until persistent showers arrive

Station Highlights

Station-level information will appear once the network shares live readings.

Pollutant Breakdown

Pollutant-level information will populate when stations share detailed readings.

Health Advisory

• Senior citizens should avoid early morning walks beside high-traffic tram and bus corridors
• Keep cable-stayed bridge commuters informed about AQI spikes before long drives
• Use dual-filter masks when navigating wholesale markets with diesel generators

Local Actions & Resources

• Choose metro, trams, or ferries for river crossings to cut dependence on diesel cabs
• Encourage use of LPG or electric cookstoves in neighbourhood eateries and kiosks
• Track West Bengal Pollution Control Board notices on preventive restrictions during smog alerts

Trend Explorer

Use the interactive charts below to analyse pollutant trends across different time ranges. Switch between pollutants to determine which one drives the overall AQI during specific hours of the day.