Air Quality Index in Kolkata

Get real-time Air Quality Index (AQI) data for Kolkata. Monitor various pollutants including PM2.5, PM10, NO2, SO2, CO, and Ozone levels.

Current AQI: 53

Last updated: 6/17/2025, 6:48:59 AM

Current AQI Status for Kolkata

27.0Good
Shows current, minimum, and maximum AQI values for each pollutant

Understanding Kolkata's Air Quality

The Air Quality Index (AQI) in Kolkata is calculated based on the concentration of various pollutants in the air. These include:

  • PM2.5 and PM10: Fine particulate matter that can penetrate deep into the lungs
  • NO2: Nitrogen dioxide from vehicle emissions and industrial processes
  • SO2: Sulfur dioxide from industrial activities
  • CO: Carbon monoxide from incomplete combustion
  • O3: Ground-level ozone formed by chemical reactions between pollutants