SmogRank / World / Chile / April 2025

Most polluted cities in Chile, April 2025

44 cities in Chile ranked by their average PM2.5 over the 30 days. Worst: Coyhaique at 57.6 µg/m³, #22 of 2,569 cities in the world. Cleanest: Alto Hospicio at 17.0. A city needs measurements on 70% of the days to be ranked.

← Coyhaique 57.6 µg/m³ 50 µg/m³0
Every city in Chile ranked for April 2025, 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
    152
  2. 2NacimientoBiobio
    121
  3. 3VillarricaAraucania
    120
  4. 4OsornoLos Lagos Region
    108
  5. 5HualpénBiobio
    104
  6. 6LinaresMaule Region
    99
  7. 7Puerto VarasLos Lagos Region
    99
  8. 8San CarlosÑuble
    97
  9. 9La UniónLos Ríos Region
    97
  10. 10CuranilahueBiobio
    96
  11. 10ChillánÑuble
    96
  12. 12ValdiviaLos Ríos Region
    92
  13. 13Puerto AysénAysén
    92
  14. 14TemucoAraucania
    91
  15. 15CoronelBiobio
    91
  16. 16Puente AltoSantiago Metropolitan
    91
  17. 17SantiagoSantiago Metropolitan
    90
  18. 17Puerto MonttLos Lagos Region
    90
  19. 17Los ÁngelesBiobio
    90
  20. 20TalcaMaule Region
    86
  21. 21TocopillaAntofagasta
    85
  22. 22RancaguaO'Higgins Region
    84
  23. 23TalcahuanoBiobio
    84
  24. 24CuricóMaule Region
    84
  25. 25ConcónValparaiso
    82
  26. 26TalaganteSantiago Metropolitan
    80
  27. 27QuillotaValparaiso
    80
  28. 28ToméBiobio
    79
  29. 29RengoO'Higgins Region
    78
  30. 30CoquimboCoquimbo Region
    77
  31. 31QuinteroValparaiso
    77
  32. 32CauquenesMaule Region
    76
  33. 33AricaArica y Parinacota Region
    76
  34. 34CopiapóAtacama
    76
  35. 35Viña del MarValparaiso
    74
  36. 36La SerenaCoquimbo Region
    74
  37. 37QuilpuéValparaiso
    73
  38. 38ChiguayanteBiobio
    73
  39. 39San Pedro de la PazBiobio
    72
  40. 40ConcepciónBiobio
    71
  41. 41AntofagastaAntofagasta
    71
  42. 42CalamaAntofagasta
    66
  43. 43LotaBiobio
    66
  44. 44Alto HospicioTarapacá
    66
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, April 2025 · Chile now

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SmogRank, most polluted cities in Chile, PM2.5, April 2025, smogrank.com/cl/history/2025-04 (accessed 2 Oct 2026).

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