SmogRank / History / City race

Cities, 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 to12 Sep 2026 That day's board

The worst cities for PM2.5 over the 30 days to 12 Sep 2026: Palembang 115.8 µg/m³, Coyhaique 86.5 µg/m³ and Kinshasa 76.3 µg/m³.

  1. 1PalembangIndonesia115.8
  2. 2CoyhaiqueChile86.5
  3. 3KinshasaDemocratic Republic of the Congo76.3
  4. 4BawānaIndia71.9
  5. 5PanipatIndia64.2
  6. 6GummidipundiIndia60.9
  7. 7MānesarIndia60.0
  8. 8KampalaUganda59.4
  9. 9LilongweMalawi58.2
  10. 10Charkhi DādriIndia56.5
  11. 11OsornoChile56.4
  12. 12ChāpraIndia55.7
  13. 13DispurIndia55.5
  14. 14GujranwalaPakistan55.2
  15. 15BlantyreMalawi54.3
  16. 16Puerto VarasChile53.7
  17. 17PāliIndia52.2
  18. 18PithampurIndia52.2
  19. 19GobindgarhIndia51.1
  20. 20JīndIndia49.9

+ 2,845 more cities, the next at 49.6 µg/m³

Not counted on this day, too few days measured: Ludhiana since 29 Aug 2026 and Santa María since 17 Jul 2026.

30 days7 days
GoodModerateUnhealthy for sensitive 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.