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 to21 Nov 2023 That day's board

The worst cities in Chile for PM2.5 over the 30 days to 21 Nov 2023: Puerto Varas 30.6 µg/m³, Hualpén 26.7 µg/m³ and Coyhaique 25.9 µg/m³.

  1. 1Puerto VarasLos Lagos Region30.6
  2. 2HualpénBiobio26.7
  3. 3CoyhaiqueAysén25.9
  4. 4NacimientoBiobio23.2
  5. 5TocopillaAntofagasta22.6
  6. 6TemucoAraucania20.9
  7. 7PuchuncavíValparaiso20.5
  8. 8CoronelBiobio20.5
  9. 9QuinteroValparaiso20.1
  10. 10QuillotaValparaiso20.0
  11. 11CoquimboCoquimbo Region19.7
  12. 12HuascoAtacama18.9
  13. 13ValdiviaLos Ríos Region18.8
  14. 14San CarlosÑuble18.7
  15. 15LajaBiobio18.5
  16. 16TalcahuanoBiobio18.2
  17. 17Viña del MarValparaiso17.6
  18. 18ConcónValparaiso17.6
  19. 19HualquiBiobio17.3
  20. 20San Pedro de la PazBiobio17.1

+ 4 more cities, 16.1 µg/m³ and below

Not counted on this day, too few days measured: Lota since 2 Nov 2023, Tomé since 1 Nov 2023, Talagante since 1 Nov 2023 and 18 more cities.

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.