SmogRank / World / India / August 2023

Most polluted cities in India, August 2023

5 cities in India ranked by their average PM2.5 over the 31 days. Worst: Kolkata at 39.1 µg/m³, #20 of 1,670 cities in the world. Cleanest: Mumbai at 7.6. A city needs measurements on 70% of the days to be ranked.

← Kolkata 39.1 µg/m³ 30 µg/m³0
Every city in India ranked for August 2023, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1KolkataWest Bengal
    39.1
  2. 2DelhiDelhi
    31.3
  3. 3ChennaiTamil Nadu
    27.9
  4. 4HyderabadTelangana
    24.0
  5. 5MumbaiMaharashtra
    7.6
Good0–5
Fair6–15
Moderate16–50
Poor51–90
Very poor91–140
Extremely poor141+

The European Environment Agency's air quality index bands for PM2.5 (2024 revision); it has bands, not numbers, so values stay in µg/m³. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

All cities in the world, August 2023 · India now

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SmogRank, most polluted cities in India, PM2.5, August 2023, smogrank.com/in/history/2023-08 (accessed 2 Oct 2026).

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