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 7 days to13 Jul 2026 That day's board

The worst cities for PM2.5 over the 7 days to 13 Jul 2026: Coyhaique 146.3 µg/m³, Gurugram 127.6 µg/m³ and Kinshasa 97.8 µg/m³.

  1. 1CoyhaiqueChile146.3
  2. 2GurugramIndia127.6
  3. 3KinshasaDemocratic Republic of the Congo97.8
  4. 4HualpénChile92.0
  5. 5LinaresChile78.7
  6. 6MānesarIndia78.0
  7. 7BhiwāniIndia75.9
  8. 8CuricóChile74.0
  9. 9JīndIndia72.5
  10. 10OsornoChile72.4
  11. 11CuranilahueChile71.4
  12. 12Charkhi DādriIndia71.1
  13. 13BahadurgarhIndia69.2
  14. 14NarnaulIndia68.0
  15. 15FaridabadIndia68.0
  16. 16VillarricaChile67.1
  17. 17TemucoChile65.9
  18. 18Puerto VarasChile65.6
  19. 19PanipatIndia65.5
  20. 20NeelankaraiIndia65.0

+ 2,925 more cities, 64.9 µg/m³ and below

Not counted on this day, too few days measured: Santa María since 10 Jul 2026, Sonīpat since 25 Jun 2026 and Loni since 24 Jun 2026.

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.