SmogRank / World / Chile / February 2026

Most polluted cities in Chile, February 2026

41 cities in Chile ranked by their average PM2.5 over the 28 days. Worst: Copiapó at 27.4 µg/m³, #294 of 2,520 cities in the world. Cleanest: Linares at 12.4. A city needs measurements on 70% of the days to be ranked.

← Copiapó 27.4 µg/m³ 20 µg/m³0
Every city in Chile ranked for February 2026, 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. 1CopiapóAtacama
    85
  2. 2TalaganteSantiago Metropolitan
    82
  3. 2HualpénBiobio
    82
  4. 4TocopillaAntofagasta
    82
  5. 5AricaArica y Parinacota Region
    75
  6. 6Puente AltoSantiago Metropolitan
    74
  7. 7QuinteroValparaiso
    73
  8. 8RancaguaO'Higgins Region
    71
  9. 9CuricóMaule Region
    71
  10. 10SantiagoSantiago Metropolitan
    70
  11. 10ConcónValparaiso
    70
  12. 12La SerenaCoquimbo Region
    69
  13. 13Puerto VarasLos Lagos Region
    69
  14. 14RengoO'Higgins Region
    68
  15. 15CoyhaiqueAysén
    67
  16. 15CalamaAntofagasta
    67
  17. 17Viña del MarValparaiso
    67
  18. 17CoquimboCoquimbo Region
    67
  19. 19QuillotaValparaiso
    66
  20. 20San Pedro de la PazBiobio
    66
  21. 21QuilpuéValparaiso
    66
  22. 22TalcahuanoBiobio
    65
  23. 22NacimientoBiobio
    65
  24. 24CuranilahueBiobio
    64
  25. 25VillarricaAraucania
    64
  26. 25CoronelBiobio
    64
  27. 27ChiguayanteBiobio
    63
  28. 27AntofagastaAntofagasta
    63
  29. 29ToméBiobio
    63
  30. 29ChillánÑuble
    63
  31. 31TalcaMaule Region
    63
  32. 32Puerto MonttLos Lagos Region
    63
  33. 33OsornoLos Lagos Region
    62
  34. 34LotaBiobio
    61
  35. 34ConcepciónBiobio
    61
  36. 36HualquiBiobio
    61
  37. 37Los ÁngelesBiobio
    61
  38. 38La UniónLos Ríos Region
    61
  39. 39Alto HospicioTarapacá
    60
  40. 40TemucoAraucania
    57
  41. 41LinaresMaule Region
    57
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 2026 · Chile now

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

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