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 to16 Mar 2025 That day's board

The worst cities in India for PM2.5 over the 30 days to 16 Mar 2025: Loni 117.6 µg/m³, Hājīpur 113.9 µg/m³ and Bawāna 100.6 µg/m³.

  1. 1LoniUttar Pradesh117.6
  2. 2HājīpurBihar113.9
  3. 3BawānaDelhi100.6
  4. 4AngulOdisha100.3
  5. 5Dera MāndiDelhi86.1
  6. 6SasarāmBihar84.7
  7. 7NarelaDelhi81.7
  8. 8PatnaBihar81.1
  9. 9MandideepMadhya Pradesh77.8
  10. 10RourkelaOdisha77.1
  11. 11ĀsansolWest Bengal76.4
  12. 12SiltaraChhattisgarh75.6
  13. 13DelhiDelhi75.3
  14. 14SingrauliMadhya Pradesh73.7
  15. 15Charkhi DādriHaryana73.1
  16. 16RānīganjWest Bengal72.5
  17. 17TumkūrKarnataka72.1
  18. 18GhāziābādUttar Pradesh71.9
  19. 19Kahi KuchiAssam70.8
  20. 20DurgapurWest Bengal70.5

+ 191 more cities, 70.1 µg/m³ and below

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.