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 17 Aug 2024: Osorno 80.1 µg/m³, Nacimiento 79.6 µg/m³ and Puerto Varas 74.9 µg/m³.
- 1OsornoLos Lagos Region80.1
- 2NacimientoBiobio79.6
- 3Puerto VarasLos Lagos Region74.9
- 4HualpénBiobio69.9
- 5VillarricaAraucania66.8
- 6CoyhaiqueAysén64.8
- 7TemucoAraucania62.4
- 8HualquiBiobio57.7
- 9CuricóMaule Region56.7
- 10La UniónLos Ríos Region56.3
- 11ValdiviaLos Ríos Region54.3
- 12CoronelBiobio53.4
- 13RancaguaO'Higgins Region53.0
- 14ChillánÑuble52.8
- 15CuranilahueBiobio51.8
- 16RengoO'Higgins Region51.6
- 17Puerto MonttLos Lagos Region49.5
- 18Puerto AysénAysén49.2
- 19SantiagoSantiago Metropolitan48.6
- 20TalcaMaule Region47.6
+ 24 more cities, 43.3 µg/m³ and below
Not counted on this day, too few days measured: Lota since 7 Aug 2024 and San Carlos since 18 Jul 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 readers for them. Most cities there are missing from this board, not clean. Why.