What is the air quality in Kolkata?

Kolkata, India has an annual US AQI of 119 (Polluted) and average PM2.5 of 51.7 µg/m³, ranking #5134 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Kolkata?

July is typically the cleanest month (AQI 68) and January the most polluted (AQI 188).

Where does Kolkata's air quality data come from?

PM2.5: 1998–2026 (monitors 2018–2026, satellite 1998–2018; 2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Kolkata, India — Air Quality & Clean City Guide 2026

Kolkata Air Quality Data

Global rank	City	Continent	AQI	PM2.5
5134	Kolkata, India	Asia	AQI 119	PM2.5 51.7 µg/m³