SmogRank / World / Chile / September 2023

Most polluted cities in Chile, September 2023

41 cities in Chile ranked by their average PM2.5 over the 30 days. Worst: Coyhaique at 55.5 µg/m³, #3 of 1,863 cities in the world. Cleanest: Calama at 16.0. A city needs measurements on 70% of the days to be ranked.

← Coyhaique 55.5 µg/m³ 50 µg/m³0
Every city in Chile ranked for September 2023, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1CoyhaiqueAysén
    151
  2. 2OsornoLos Lagos Region
    129
  3. 3Puerto VarasLos Lagos Region
    127
  4. 4NacimientoBiobio
    114
  5. 5Puerto MonttLos Lagos Region
    106
  6. 5La UniónLos Ríos Region
    106
  7. 7Puerto AysénAysén
    94
  8. 8San CarlosÑuble
    92
  9. 9SantiagoSantiago Metropolitan
    92
  10. 10CuranilahueBiobio
    91
  11. 11RancaguaO'Higgins Region
    91
  12. 11Puente AltoSantiago Metropolitan
    91
  13. 13HualquiBiobio
    87
  14. 14RengoO'Higgins Region
    87
  15. 15ChillánÑuble
    85
  16. 16TemucoAraucania
    84
  17. 16CuricóMaule Region
    84
  18. 18TalcahuanoBiobio
    82
  19. 19CoronelBiobio
    81
  20. 20CauquenesMaule Region
    80
  21. 21TalaganteSantiago Metropolitan
    79
  22. 22Los ÁngelesBiobio
    79
  23. 23QuillotaValparaiso
    78
  24. 24AntofagastaAntofagasta
    76
  25. 25ToméBiobio
    76
  26. 26ValdiviaLos Ríos Region
    75
  27. 26QuinteroValparaiso
    75
  28. 26San Pedro de la PazBiobio
    75
  29. 29CopiapóAtacama
    73
  30. 30ConcónValparaiso
    73
  31. 31CoquimboCoquimbo Region
    73
  32. 32TocopillaAntofagasta
    73
  33. 33AricaArica y Parinacota Region
    72
  34. 34TalcaMaule Region
    71
  35. 35ConcepciónBiobio
    70
  36. 36La SerenaCoquimbo Region
    69
  37. 36ChiguayanteBiobio
    69
  38. 38Viña del MarValparaiso
    68
  39. 38Alto HospicioTarapacá
    68
  40. 40LotaBiobio
    66
  41. 41CalamaAntofagasta
    64
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). 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, September 2023 · Chile now

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SmogRank, most polluted cities in Chile, PM2.5, September 2023, smogrank.com/cl/history/2023-09 (accessed 2 Oct 2026).

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