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 to22 Mar 2024 That day's board

The worst cities in Chile for PM2.5 over the 30 days to 22 Mar 2024: Puerto Montt 33.7 µg/m³, Coyhaique 24.5 µg/m³ and Tocopilla 24.1 µg/m³.

  1. 1Puerto MonttLos Lagos Region33.7
  2. 2CoyhaiqueAysén24.5
  3. 3TocopillaAntofagasta24.1
  4. 4Puerto VarasLos Lagos Region23.6
  5. 5PuchuncavíValparaiso23.4
  6. 6Puente AltoSantiago Metropolitan23.3
  7. 7HualpénBiobio23.2
  8. 8SantiagoSantiago Metropolitan22.5
  9. 9QuinteroValparaiso22.3
  10. 10QuillotaValparaiso21.0
  11. 11Viña del MarValparaiso20.9
  12. 12TalaganteSantiago Metropolitan20.8
  13. 13San CarlosÑuble20.5
  14. 14NacimientoBiobio20.3
  15. 15ConcónValparaiso20.0
  16. 16Puerto AysénAysén19.8
  17. 17CoronelBiobio19.7
  18. 18AricaArica y Parinacota Region19.6
  19. 19San Pedro de la PazBiobio19.2
  20. 20TalcahuanoBiobio18.8

+ 23 more cities, 18.7 µg/m³ and below

Not counted on this day, too few days measured: Rengo since 9 Mar 2024 and Alto Hospicio since 3 Mar 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.