SmogRank / History / City race

Cities in India, worst air first, day by day

Each measured city's average over the 30 days to every day since January 2023, worst first. Find your own city to follow it through the race, or keep to one country.

CountriesCities
The 30 days to11 Sep 2025 That day's board

The worst cities in India for PM2.5 over the 30 days to 11 Sep 2025: Gummidipundi 65.7 µg/m³, Cuddalore 64.4 µg/m³ and Samāstipur 52.4 µg/m³.

  1. 1GummidipundiTamil Nadu65.7
  2. 2CuddaloreTamil Nadu64.4
  3. 3SamāstipurBihar52.4
  4. 4AurangābādBihar48.8
  5. 5DhaulpurRajasthan47.3
  6. 6JhānsiUttar Pradesh43.7
  7. 7KishanganjBihar42.9
  8. 8ChāpraBihar42.7
  9. 9NalbāriAssam42.4
  10. 10Sri GanganagarRajasthan42.0
  11. 11RasapūdipalemAndhra Pradesh40.8
  12. 12Kahi KuchiAssam40.3
  13. 13RamanathapuramTamil Nadu39.5
  14. 14VijayawadaAndhra Pradesh39.1
  15. 15OotyTamil Nadu38.6
  16. 16BawānaDelhi38.6
  17. 17BuxarBihar37.8
  18. 18LoniUttar Pradesh36.5
  19. 19KanchipuramTamil Nadu35.7
  20. 20AlangadKerala35.7

+ 198 more cities, 34.9 µg/m³ and below

Not counted on this day, too few days measured: Rānipet since 9 Sep 2025, Arāria since 8 Sep 2025, Singrauli since 8 Sep 2025 and 10 more cities.

30 days7 days
GoodModerateSensitive groupsUnhealthyVery unhealthyHazardousWHO 24-hour guideline, 15 µg/m³Fades where it stood: not counted that day

A city's number is its average over the 30 days, shown only when 21 of them were measured (5 of 7 on the 7-day race), the same minimum as the 30- and 7-day boards. A city whose monitors go quiet fades out where it stood rather than sliding down, so a gap never reads as cleaner air. Some large countries are thin or missing because their monitors' licences don't allow reuse. How we rank.

Not covered: the government monitoring networks of China and Turkey, which publish only on their own websites; we are building the readers for them. Most cities there are missing from this board, not clean. Why.