What is the air quality in Chennai?

Chennai, India has an annual US AQI of 92 (Polluted) and average PM2.5 of 30.5 µg/m³, ranking #4345 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Chennai?

April is typically the cleanest month (AQI 78) and December the most polluted (AQI 117).

Where does Chennai's air quality data come from?

PM2.5: 1998–2026 (monitors 2015–2026, satellite 1998–2015; 2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Chennai, India — Air Quality & Clean City Guide 2026

Chennai Air Quality Data

Global rank	City	Continent	AQI	PM2.5
4345	Chennai, India	Asia	AQI 92	PM2.5 30.5 µg/m³