Tamil Nadu Air Quality
Capital: Chennai · Population: 77M · 16 monitoring stations
78
Satisfactory
2024 Annual Avg
78
Annual AQI
Rank #20 in India
30 μg/m³
PM2.5
6× WHO limit
120
Winter Peak
Oct–Feb average
38
Summer Low
Jul–Sep average
Health Advisory — Satisfactory
Air quality is acceptable. Unusually sensitive individuals should consider reducing prolonged outdoor exertion.
Major Cities in Tamil Nadu
Live AQI updated every 30 minutes from WAQI. 2024 Avg from CPCB annual data.
Air Quality in Tamil Nadu
Tamil Nadu benefits from coastal winds and frequent monsoons that wash out pollutants. Chennai's sea breeze limits AQI build-up. Industrial corridors around Coimbatore and Tirupur add local pollution.
Main Pollution Sources
Seasonal AQI Patterns in Tamil Nadu
Worst season. Temperature inversions, crop burning, and low wind speeds trap pollutants. AQI often exceeds 300 in northern states.
Dust storms and heat raise AQI. Less fog than winter. Industrial activity at peak.
Best air quality of the year. Rain washes out PM2.5 and PM10. AQI typically falls to lowest levels.
Rapidly deteriorating. Crop stubble burning begins in northern states. AQI transitions from good to dangerous.