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 to18 Mar 2025 That day's board

The worst cities in India for PM2.5 over the 30 days to 18 Mar 2025: Loni 117.5 µg/m³, Hājīpur 111.9 µg/m³ and Angul 100.7 µg/m³.

  1. 1LoniUttar Pradesh117.5
  2. 2HājīpurBihar111.9
  3. 3AngulOdisha100.7
  4. 4BawānaDelhi99.7
  5. 5Dera MāndiDelhi85.1
  6. 6SasarāmBihar82.3
  7. 7NarelaDelhi80.9
  8. 8PatnaBihar78.3
  9. 9MandideepMadhya Pradesh77.5
  10. 10ĀsansolWest Bengal76.4
  11. 11RourkelaOdisha76.1
  12. 12SiltaraChhattisgarh75.6
  13. 13JājangOdisha74.2
  14. 14SingrauliMadhya Pradesh72.7
  15. 15Charkhi DādriHaryana72.5
  16. 16RānīganjWest Bengal71.6
  17. 17TumkūrKarnataka71.0
  18. 18DelhiDelhi71.0
  19. 19DurgapurWest Bengal70.9
  20. 20GhāziābādUttar Pradesh70.7

+ 205 more cities, the next at 69.7 µg/m³

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 reader for China's network. Turkey's network doesn't answer requests from outside the country, so we can't read it. Most cities there are missing from this board, not clean. Why.