SmogRank / World / Chile / August 2025

Most polluted cities in Chile, August 2025

45 cities in Chile ranked by their average PM2.5 over the 31 days. Worst: Coyhaique at 85.3 µg/m³, #3 of 2,503 cities in the world. Cleanest: Alto Hospicio at 16.5. A city needs measurements on 70% of the days to be ranked.

← Coyhaique 85.3
Every city in Chile ranked for August 2025, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1CoyhaiqueAysén
    9
  2. 2NacimientoBiobio
    7
  3. 3OsornoLos Lagos Region
    6
  4. 4Puerto VarasLos Lagos Region
    6
  5. 5VillarricaAraucania
    5
  6. 6HualpénBiobio
    5
  7. 7San CarlosÑuble
    5
  8. 8Puerto MonttLos Lagos Region
    5
  9. 9LinaresMaule Region
    5
  10. 10CuricóMaule Region
    5
  11. 11ValdiviaLos Ríos Region
    5
  12. 12La UniónLos Ríos Region
    5
  13. 13CuranilahueBiobio
    5
  14. 14Puerto AysénAysén
    4
  15. 15RengoO'Higgins Region
    4
  16. 16ChillánÑuble
    4
  17. 17Los ÁngelesBiobio
    4
  18. 18TemucoAraucania
    4
  19. 19RancaguaO'Higgins Region
    4
  20. 20HualquiBiobio
    4
  21. 21TalaganteSantiago Metropolitan
    4
  22. 22CoronelBiobio
    4
  23. 23SantiagoSantiago Metropolitan
    4
  24. 24TalcaMaule Region
    4
  25. 25Puente AltoSantiago Metropolitan
    4
  26. 26TalcahuanoBiobio
    4
  27. 27QuilpuéValparaiso
    3
  28. 28ConcónValparaiso
    3
  29. 29ConcepciónBiobio
    3
  30. 30CauquenesMaule Region
    3
  31. 31ChiguayanteBiobio
    3
  32. 32QuillotaValparaiso
    3
  33. 33QuinteroValparaiso
    3
  34. 34TocopillaAntofagasta
    3
  35. 35San Pedro de la PazBiobio
    3
  36. 36ToméBiobio
    3
  37. 37AntofagastaAntofagasta
    3
  38. 38CopiapóAtacama
    3
  39. 39La SerenaCoquimbo Region
    3
  40. 40AricaArica y Parinacota Region
    2
  41. 41CoquimboCoquimbo Region
    2
  42. 42Viña del MarValparaiso
    2
  43. 43LotaBiobio
    2
  44. 44CalamaAntofagasta
    2
  45. 45Alto HospicioTarapacá
    2
Low risk1–3
Moderate risk4–6
High risk7–10
Very high risk10+

Canada's AQHI+ for PM2.5 (1 point per 10 µg/m³), which is defined on hourly values. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

All cities in the world, August 2025 · Chile now

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SmogRank, most polluted cities in Chile, PM2.5, August 2025, smogrank.com/cl/history/2025-08 (accessed 2 Oct 2026).

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