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 to19 May 2024 That day's board

The worst cities in Chile for PM2.5 over the 30 days to 19 May 2024: Coyhaique 103.0 µg/m³, Nacimiento 82.3 µg/m³ and Osorno 74.3 µg/m³.

  1. 1CoyhaiqueAysén103.0
  2. 2NacimientoBiobio82.3
  3. 3OsornoLos Lagos Region74.3
  4. 4HualpénBiobio70.8
  5. 5Puerto VarasLos Lagos Region67.1
  6. 6San CarlosÑuble59.0
  7. 7CuranilahueBiobio58.3
  8. 8VillarricaAraucania56.2
  9. 9ChillánÑuble55.8
  10. 10La UniónLos Ríos Region53.8
  11. 11LajaBiobio53.3
  12. 12TemucoAraucania50.6
  13. 13TalcahuanoBiobio50.5
  14. 14CoronelBiobio49.9
  15. 15Puerto MonttLos Lagos Region49.2
  16. 16Los ÁngelesBiobio48.7
  17. 17Puerto AysénAysén47.6
  18. 18CuricóMaule Region45.8
  19. 19RengoO'Higgins Region43.1
  20. 20RancaguaO'Higgins Region39.8

+ 25 more cities, 37.8 µg/m³ and below

Not counted on this day, too few days measured: Hualqui since 12 May 2024.

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.