SmogRank / World / Chile / October 2026

Most polluted cities in Chile, October 2026

40 cities in Chile ranked by their average PM2.5 so far (1 of 31 days). Worst: Villarrica at 56.9 µg/m³, #8 of 1,630 cities in the world. Cleanest: Calama at 15.3. A city needs measurements on 70% of the days to be ranked.

← Villarrica 56.9 µg/m³ 50 µg/m³0
Every city in Chile ranked for October 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. 1VillarricaAraucania
    152
  2. 2ValdiviaLos Ríos Region
    125
  3. 3HualpénBiobio
    124
  4. 4CoyhaiqueAysén
    112
  5. 5ChillánÑuble
    102
  6. 6TalcahuanoBiobio
    94
  7. 7TalcaMaule Region
    94
  8. 8OsornoLos Lagos Region
    92
  9. 9CuranilahueBiobio
    91
  10. 10TemucoAraucania
    89
  11. 11SantiagoSantiago Metropolitan
    84
  12. 11LinaresMaule Region
    84
  13. 13San CarlosÑuble
    83
  14. 14CauquenesMaule Region
    81
  15. 15HualquiBiobio
    80
  16. 16RancaguaO'Higgins Region
    80
  17. 17Puente AltoSantiago Metropolitan
    78
  18. 18CoronelBiobio
    77
  19. 19La UniónLos Ríos Region
    76
  20. 20Los ÁngelesBiobio
    75
  21. 21RengoO'Higgins Region
    74
  22. 22CopiapóAtacama
    73
  23. 23Puerto MonttLos Lagos Region
    73
  24. 24CuricóMaule Region
    72
  25. 25Puerto AysénAysén
    72
  26. 25AntofagastaAntofagasta
    72
  27. 27San Pedro de la PazBiobio
    71
  28. 28ConcónValparaiso
    70
  29. 29La SerenaCoquimbo Region
    69
  30. 30TalaganteSantiago Metropolitan
    68
  31. 31CoquimboCoquimbo Region
    68
  32. 32ChiguayanteBiobio
    68
  33. 33ToméBiobio
    66
  34. 34LotaBiobio
    66
  35. 35Viña del MarValparaiso
    65
  36. 35QuinteroValparaiso
    65
  37. 37QuilpuéValparaiso
    65
  38. 37QuillotaValparaiso
    65
  39. 39Alto HospicioTarapacá
    63
  40. 40CalamaAntofagasta
    63
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, October 2026 · Chile now

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SmogRank, most polluted cities in Chile, PM2.5, October 2026 (so far), smogrank.com/cl/history/2026-10 (accessed 2 Oct 2026).

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