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 20 Mar 2024: Puerto Montt 33.5 µg/m³, Puerto Varas 24.9 µg/m³ and Tocopilla 24.5 µg/m³.
- 1Puerto MonttLos Lagos Region33.5
- 2Puerto VarasLos Lagos Region24.9
- 3TocopillaAntofagasta24.5
- 4PuchuncavíValparaiso23.5
- 5HualpénBiobio22.9
- 6CoyhaiqueAysén22.9
- 7Puente AltoSantiago Metropolitan22.5
- 8QuinteroValparaiso22.3
- 9SantiagoSantiago Metropolitan22.1
- 10Viña del MarValparaiso20.9
- 11QuillotaValparaiso20.7
- 12San CarlosÑuble20.6
- 13TalaganteSantiago Metropolitan20.3
- 14NacimientoBiobio19.9
- 15ConcónValparaiso19.9
- 16CoronelBiobio19.6
- 17AricaArica y Parinacota Region19.3
- 18San Pedro de la PazBiobio19.3
- 19TalcahuanoBiobio18.7
- 20RancaguaO'Higgins Region18.6
+ 23 more cities, 18.5 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.
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.