SmogRank / World / Chile / December 2025

Most polluted cities in Chile, December 2025

41 cities in Chile ranked by their average PM2.5 over the 31 days. Worst: Curanilahue at 53.3 µg/m³, #230 of 2,638 cities in the world. Cleanest: Temuco at 12.3. A city needs measurements on 70% of the days to be ranked.

← Curanilahue 53.3 µg/m³ 50 µg/m³0
Every city in Chile ranked for December 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. 1CuranilahueBiobio
    6
  2. 2AricaArica y Parinacota Region
    3
  3. 3Puente AltoSantiago Metropolitan
    3
  4. 4HualpénBiobio
    3
  5. 5CopiapóAtacama
    3
  6. 6SantiagoSantiago Metropolitan
    3
  7. 7TocopillaAntofagasta
    2
  8. 8NacimientoBiobio
    2
  9. 8ConcónValparaiso
    2
  10. 10QuinteroValparaiso
    2
  11. 11CuricóMaule Region
    2
  12. 12TalaganteSantiago Metropolitan
    2
  13. 13RancaguaO'Higgins Region
    2
  14. 14QuilpuéValparaiso
    2
  15. 15CoronelBiobio
    2
  16. 16QuillotaValparaiso
    2
  17. 16Puerto VarasLos Lagos Region
    2
  18. 18AntofagastaAntofagasta
    2
  19. 19Viña del MarValparaiso
    2
  20. 20La SerenaCoquimbo Region
    2
  21. 21RengoO'Higgins Region
    2
  22. 21CoquimboCoquimbo Region
    2
  23. 23CalamaAntofagasta
    2
  24. 23Alto HospicioTarapacá
    2
  25. 25San Pedro de la PazBiobio
    2
  26. 26TalcahuanoBiobio
    2
  27. 26ChiguayanteBiobio
    2
  28. 28Puerto MonttLos Lagos Region
    2
  29. 29TalcaMaule Region
    2
  30. 29ConcepciónBiobio
    2
  31. 31VillarricaAraucania
    2
  32. 32San CarlosÑuble
    2
  33. 32CoyhaiqueAysén
    2
  34. 34ChillánÑuble
    2
  35. 35OsornoLos Lagos Region
    2
  36. 36Los ÁngelesBiobio
    2
  37. 37La UniónLos Ríos Region
    2
  38. 38LinaresMaule Region
    2
  39. 39HualquiBiobio
    2
  40. 40ValdiviaLos Ríos Region
    2
  41. 41TemucoAraucania
    2
Low risk1–3
Moderate risk4–6
High risk7–10
Very high risk10+

Canada's AQHI+ for PM2.5 (1 point per 10 µg/m³), which is defined on hourly values. 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, December 2025 · Chile now

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SmogRank, most polluted cities in Chile, PM2.5, December 2025, smogrank.com/cl/history/2025-12 (accessed 2 Oct 2026).

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