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
    3
  2. 1ChiguayanteBiobio
    3
  3. 3Puente AltoSantiago Metropolitan
    2
  4. 4SantiagoSantiago Metropolitan
    2
  5. 5TocopillaAntofagasta
    2
  6. 6AricaArica y Parinacota Region
    2
  7. 7QuinteroValparaiso
    2
  8. 8QuillotaValparaiso
    2
  9. 8CalamaAntofagasta
    2
  10. 10ConcónValparaiso
    2
  11. 11Viña del MarValparaiso
    2
  12. 12San Pedro de la PazBiobio
    2
  13. 13San CarlosÑuble
    2
  14. 14TalaganteSantiago Metropolitan
    2
  15. 15AntofagastaAntofagasta
    2
  16. 16LinaresMaule Region
    2
  17. 17CuranilahueBiobio
    2
  18. 18CuricóMaule Region
    2
  19. 19CoquimboCoquimbo Region
    2
  20. 20HualquiBiobio
    2
  21. 20CoronelBiobio
    2
  22. 20CopiapóAtacama
    2
  23. 23RengoO'Higgins Region
    2
  24. 24RancaguaO'Higgins Region
    2
  25. 25ToméBiobio
    2
  26. 25QuilpuéValparaiso
    2
  27. 27La SerenaCoquimbo Region
    2
  28. 27ConcepciónBiobio
    2
  29. 29TalcahuanoBiobio
    2
  30. 30CauquenesMaule Region
    2
  31. 31ChillánÑuble
    2
  32. 31Alto HospicioTarapacá
    2
  33. 33VillarricaAraucania
    2
  34. 33TalcaMaule Region
    2
  35. 35Los ÁngelesBiobio
    2
  36. 36TemucoAraucania
    2
  37. 37CoyhaiqueAysén
    2
  38. 38OsornoLos Lagos Region
    2
  39. 39LotaBiobio
    2
  40. 40Puerto VarasLos Lagos Region
    2
  41. 41Puerto AysénAysén
    2
  42. 42ValdiviaLos Ríos Region
    2
  43. 43Puerto MonttLos Lagos Region
    2
Low1–3
Moderate4–6
High7–9
Very high10

The UK's Daily Air Quality Index (1 to 10), PM2.5 bands. 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

Use this board

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

Download top 10 (PNG)

You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.