SmogRank / World / Chile / January 2025

Most polluted cities in Chile, January 2025

43 cities in Chile ranked by their average PM2.5 over the 31 days. Worst: Nacimiento at 29.3 µg/m³, #92 of 2,121 cities in the world. Cleanest: Puerto Montt at 12.8. A city needs measurements on 70% of the days to be ranked.

← Nacimiento 29.3
Every city in Chile ranked for January 2025, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1NacimientoBiobio
    29.3
  2. 1ChiguayanteBiobio
    29.3
  3. 3Puente AltoSantiago Metropolitan
    22.6
  4. 4SantiagoSantiago Metropolitan
    21.2
  5. 5TocopillaAntofagasta
    21.1
  6. 6AricaArica y Parinacota Region
    20.7
  7. 7QuinteroValparaiso
    20.6
  8. 8QuillotaValparaiso
    20.2
  9. 8CalamaAntofagasta
    20.2
  10. 10ConcónValparaiso
    20.1
  11. 11Viña del MarValparaiso
    19.9
  12. 12San Pedro de la PazBiobio
    18.9
  13. 13San CarlosÑuble
    18.7
  14. 14TalaganteSantiago Metropolitan
    18.4
  15. 15AntofagastaAntofagasta
    18.3
  16. 16LinaresMaule Region
    18.2
  17. 17CuranilahueBiobio
    18.1
  18. 18CuricóMaule Region
    18.0
  19. 19CoquimboCoquimbo Region
    17.9
  20. 20HualquiBiobio
    17.8
  21. 20CoronelBiobio
    17.8
  22. 20CopiapóAtacama
    17.8
  23. 23RengoO'Higgins Region
    17.7
  24. 24RancaguaO'Higgins Region
    17.2
  25. 25ToméBiobio
    17.0
  26. 25QuilpuéValparaiso
    17.0
  27. 27La SerenaCoquimbo Region
    16.7
  28. 27ConcepciónBiobio
    16.7
  29. 29TalcahuanoBiobio
    16.6
  30. 30CauquenesMaule Region
    16.1
  31. 31ChillánÑuble
    16.0
  32. 31Alto HospicioTarapacá
    16.0
  33. 33VillarricaAraucania
    15.8
  34. 33TalcaMaule Region
    15.8
  35. 35Los ÁngelesBiobio
    15.5
  36. 36TemucoAraucania
    15.2
  37. 37CoyhaiqueAysén
    15.0
  38. 38OsornoLos Lagos Region
    14.7
  39. 39LotaBiobio
    14.4
  40. 40Puerto VarasLos Lagos Region
    13.8
  41. 41Puerto AysénAysén
    13.2
  42. 42ValdiviaLos Ríos Region
    13.1
  43. 43Puerto MonttLos Lagos Region
    12.8
Good0–5
Fair6–15
Moderate16–50
Poor51–90
Very poor91–140
Extremely poor141+

The European Environment Agency's air quality index bands for PM2.5 (2024 revision); it has bands, not numbers, so values stay in µg/m³. 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, January 2025 · Chile now

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SmogRank, most polluted cities in Chile, PM2.5, January 2025, smogrank.com/cl/history/2025-01 (accessed 2 Oct 2026).

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