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.
The worst cities in Chile for PM2.5 over the 30 days to 21 Jun 2024: Coyhaique 123.6 µg/m³, Osorno 78.2 µg/m³ and Nacimiento 69.5 µg/m³.
- 1CoyhaiqueAysén123.6
- 2OsornoLos Lagos Region78.2
- 3NacimientoBiobio69.5
- 4HualpénBiobio60.2
- 5RengoO'Higgins Region58.7
- 6CuricóMaule Region58.3
- 7San CarlosÑuble56.9
- 8CuranilahueBiobio56.1
- 9Puerto VarasLos Lagos Region53.9
- 10La UniónLos Ríos Region53.8
- 11RancaguaO'Higgins Region50.3
- 12TalaganteSantiago Metropolitan49.8
- 13SantiagoSantiago Metropolitan49.0
- 14Puerto AysénAysén48.2
- 15ChillánÑuble46.9
- 16Puerto MonttLos Lagos Region46.3
- 17Los ÁngelesBiobio43.8
- 18QuilpuéValparaiso43.7
- 19ValdiviaLos Ríos Region43.0
- 20VillarricaAraucania42.6
+ 25 more cities, the next at 42.1 µg/m³
Not counted on this day, too few days measured: Laja since 13 Jun 2024.
Cities counted each 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 reader for China's network. Turkey's network doesn't answer requests from outside the country, so we can't read it. Most cities there are missing from this board, not clean. Why.