What is the air quality trend in Kolkata?

Over the past 2 days, Kolkata had an average AQI of 96 based on station measurements. The worst day was with AQI .

How is Kolkata air quality measured?

Air quality in Kolkata is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Kolkata, India

Name: Kolkata Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Kolkata, India.

Current AQI
Moderate

48 Hours 7 Days 14 Days 20 Days

PM2.5 Trend

43h · 3 stations

Daily Summary

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-04-10	105	96–150	37.0 µg/m³	99.0	20h	130
2026-04-09	88	66–104	29.6 µg/m³	40.5	23h	95

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