Chennai air quality worsens after Deepavali, several parts of city report elevated pollution
Air pollution levels in Chennai have climbed sharply following Deepavali celebrations, with the city’s average Air Quality Index (AQI) reaching 159. Several parts of the city have reported elevated pollution levels despite intermittent rainfall during the festive period.
Residents across Chennai celebrated Deepavali by bursting firecrackers, with celebrations beginning on Wednesday and continuing into Thursday morning. Firecracker activity was particularly noticeable between 7 pm and 8 pm, when people took advantage of breaks in the rain to set off crackers.
Royapuram emerged as the most polluted locality, recording an AQI of 238. Other areas reporting high pollution levels included Perungudi at 175, Manali at 168, Kodungaiyur at 166 and Arumbakkam at 165.
The increase is particularly concerning when compared with last year’s readings. Chennai’s average AQI was 56 on November 6 and 74 on November 7 in 2025. This year’s figure of 159 indicates a substantial deterioration in air quality.
The rising pollution has raised concerns among residents, with many experiencing discomfort amid the worsening atmospheric conditions. The post-festival pollution spike has once again highlighted the environmental impact of firecracker celebrations in the city.