SmogRank / World / India / Tamil Nadu / May 2023

Most polluted cities in Tamil Nadu, India, May 2023

1 city in Tamil Nadu, India ranked by their average PM2.5 over the 31 days. The only one: Chennai at 33.2 µg/m³, #51 of 1,543 cities in the world. A city needs measurements on 70% of the days to be ranked.

  1. 1Chennai
    96
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

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SmogRank, most polluted cities in Tamil Nadu, India, PM2.5, May 2023, smogrank.com/in/region/tamil-nadu/history/2023-05 (accessed 7 Oct 2026).

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