SmogRank / World / Chile / March 2026

Most polluted cities in Chile, March 2026

43 cities in Chile ranked by their average PM2.5 over the 31 days. Worst: Puerto Varas at 30.0 µg/m³, #275 of 2,616 cities in the world. Cleanest: Calama at 15.2. A city needs measurements on 70% of the days to be ranked.

← Puerto Varas 30.0 µg/m³ 20 µg/m³0
Every city in Chile ranked for March 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. 1Puerto VarasLos Lagos Region
    90
  2. 2TocopillaAntofagasta
    88
  3. 3HualpénBiobio
    83
  4. 4VillarricaAraucania
    82
  5. 5CoyhaiqueAysén
    82
  6. 6OsornoLos Lagos Region
    80
  7. 7AricaArica y Parinacota Region
    80
  8. 8TalaganteSantiago Metropolitan
    80
  9. 9CopiapóAtacama
    79
  10. 10NacimientoBiobio
    77
  11. 11Puente AltoSantiago Metropolitan
    77
  12. 12SantiagoSantiago Metropolitan
    75
  13. 12RancaguaO'Higgins Region
    75
  14. 14La UniónLos Ríos Region
    74
  15. 15Puerto MonttLos Lagos Region
    74
  16. 15CuricóMaule Region
    74
  17. 17QuinteroValparaiso
    74
  18. 18Puerto AysénAysén
    73
  19. 19CuranilahueBiobio
    73
  20. 20Los ÁngelesBiobio
    72
  21. 21ConcónValparaiso
    71
  22. 22ValdiviaLos Ríos Region
    71
  23. 23TemucoAraucania
    71
  24. 24Viña del MarValparaiso
    70
  25. 25AntofagastaAntofagasta
    69
  26. 26QuillotaValparaiso
    69
  27. 27San CarlosÑuble
    68
  28. 27RengoO'Higgins Region
    68
  29. 27La SerenaCoquimbo Region
    68
  30. 27ChillánÑuble
    68
  31. 31QuilpuéValparaiso
    68
  32. 32HualquiBiobio
    67
  33. 33CoronelBiobio
    67
  34. 33San Pedro de la PazBiobio
    67
  35. 35CoquimboCoquimbo Region
    67
  36. 36TalcaMaule Region
    67
  37. 37TalcahuanoBiobio
    66
  38. 38Alto HospicioTarapacá
    64
  39. 39ToméBiobio
    64
  40. 39ChiguayanteBiobio
    64
  41. 41LotaBiobio
    64
  42. 42ConcepciónBiobio
    63
  43. 43CalamaAntofagasta
    62
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, March 2026 · Chile now

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SmogRank, most polluted cities in Chile, PM2.5, March 2026, smogrank.com/cl/history/2026-03 (accessed 2 Oct 2026).

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