SmogRank / History / City race

Cities in Chile, 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 to8 Jun 2026 That day's board

The worst cities in Chile for PM2.5 over the 30 days to 8 Jun 2026: Coyhaique 115.6 µg/m³, Linares 84.9 µg/m³ and Osorno 83.7 µg/m³.

  1. 1CoyhaiqueAysén115.6
  2. 2LinaresMaule Region84.9
  3. 3OsornoLos Lagos Region83.7
  4. 4NacimientoBiobio78.1
  5. 5HualpénBiobio70.8
  6. 6CuricóMaule Region67.9
  7. 7TemucoAraucania67.3
  8. 8ChillánÑuble64.8
  9. 9Puerto VarasLos Lagos Region64.0
  10. 10La UniónLos Ríos Region63.3
  11. 11HualquiBiobio63.3
  12. 12RengoO'Higgins Region63.2
  13. 13RancaguaO'Higgins Region62.7
  14. 14SantiagoSantiago Metropolitan62.3
  15. 15LajaBiobio62.0
  16. 16CuranilahueBiobio61.6
  17. 17San CarlosÑuble60.1
  18. 18TalcaMaule Region59.0
  19. 19TalaganteSantiago Metropolitan58.2
  20. 20ValdiviaLos Ríos Region58.0

+ 26 more cities, 55.0 µg/m³ and below

Not counted on this day, too few days measured: Copiapó since 29 Apr 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.