SmogRank / World / Chile / February 2025

Most polluted cities in Chile, February 2025

41 cities in Chile ranked by their average PM2.5 over the 28 days. Worst: Nacimiento at 33.7 µg/m³, #161 of 2,264 cities in the world. Cleanest: Valdivia at 13.3. A city needs measurements on 70% of the days to be ranked.

← Nacimiento 33.7 µg/m³ 30 µg/m³0
Every city in Chile ranked for February 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. 1NacimientoBiobio
    97
  2. 2ChiguayanteBiobio
    92
  3. 3TocopillaAntofagasta
    80
  4. 4Puente AltoSantiago Metropolitan
    79
  5. 5San CarlosÑuble
    78
  6. 6QuillotaValparaiso
    78
  7. 7Los ÁngelesBiobio
    77
  8. 8SantiagoSantiago Metropolitan
    77
  9. 9ConcónValparaiso
    76
  10. 10LinaresMaule Region
    76
  11. 11QuinteroValparaiso
    75
  12. 12Viña del MarValparaiso
    75
  13. 13HualquiBiobio
    74
  14. 14RancaguaO'Higgins Region
    73
  15. 15RengoO'Higgins Region
    73
  16. 16CalamaAntofagasta
    72
  17. 17AricaArica y Parinacota Region
    72
  18. 18CuricóMaule Region
    72
  19. 19ToméBiobio
    72
  20. 19CauquenesMaule Region
    72
  21. 21TalaganteSantiago Metropolitan
    71
  22. 21CoyhaiqueAysén
    71
  23. 23ChillánÑuble
    71
  24. 24CuranilahueBiobio
    71
  25. 25CopiapóAtacama
    71
  26. 26TalcaMaule Region
    70
  27. 26CoquimboCoquimbo Region
    70
  28. 28QuilpuéValparaiso
    70
  29. 29CoronelBiobio
    70
  30. 29San Pedro de la PazBiobio
    70
  31. 31La SerenaCoquimbo Region
    69
  32. 31AntofagastaAntofagasta
    69
  33. 33ConcepciónBiobio
    69
  34. 34TalcahuanoBiobio
    68
  35. 35VillarricaAraucania
    65
  36. 36TemucoAraucania
    64
  37. 37Puerto VarasLos Lagos Region
    64
  38. 38Puerto AysénAysén
    64
  39. 39LotaBiobio
    61
  40. 40OsornoLos Lagos Region
    61
  41. 41ValdiviaLos Ríos Region
    59
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, February 2025 · Chile now

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SmogRank, most polluted cities in Chile, PM2.5, February 2025, smogrank.com/cl/history/2025-02 (accessed 2 Oct 2026).

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