SmogRank / World / Chile / January 2026

Most polluted cities in Chile, January 2026

43 cities in Chile ranked by their average PM2.5 over the 31 days. Worst: Arica at 29.1 µg/m³, #181 of 2,281 cities in the world. Cleanest: Valdivia at 13.1. A city needs measurements on 70% of the days to be ranked.

← Arica 29.1
Every city in Chile ranked for January 2026, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1AricaArica y Parinacota Region
    29.1
  2. 2TocopillaAntofagasta
    25.2
  3. 3Puente AltoSantiago Metropolitan
    24.8
  4. 4CopiapóAtacama
    24.1
  5. 5TalaganteSantiago Metropolitan
    23.7
  6. 6San CarlosÑuble
    23.5
  7. 7HualpénBiobio
    23.2
  8. 8SantiagoSantiago Metropolitan
    22.8
  9. 8CuricóMaule Region
    22.8
  10. 8ChillánÑuble
    22.8
  11. 11RancaguaO'Higgins Region
    22.0
  12. 12NacimientoBiobio
    21.7
  13. 12CauquenesMaule Region
    21.7
  14. 14ConcónValparaiso
    21.6
  15. 15QuinteroValparaiso
    21.2
  16. 15Los ÁngelesBiobio
    21.2
  17. 17Viña del MarValparaiso
    20.1
  18. 18QuilpuéValparaiso
    19.9
  19. 19HualquiBiobio
    19.8
  20. 19ConcepciónBiobio
    19.8
  21. 21ToméBiobio
    19.7
  22. 22RengoO'Higgins Region
    19.5
  23. 23QuillotaValparaiso
    19.2
  24. 24CoronelBiobio
    19.0
  25. 25TalcaMaule Region
    18.9
  26. 26ChiguayanteBiobio
    18.7
  27. 27LinaresMaule Region
    18.5
  28. 28TalcahuanoBiobio
    18.4
  29. 28CalamaAntofagasta
    18.4
  30. 30San Pedro de la PazBiobio
    18.3
  31. 31AntofagastaAntofagasta
    18.0
  32. 32CoquimboCoquimbo Region
    17.6
  33. 33La SerenaCoquimbo Region
    17.4
  34. 34CuranilahueBiobio
    17.2
  35. 35Puerto VarasLos Lagos Region
    16.8
  36. 36Alto HospicioTarapacá
    16.3
  37. 37VillarricaAraucania
    15.4
  38. 38OsornoLos Lagos Region
    14.9
  39. 39CoyhaiqueAysén
    14.7
  40. 40La UniónLos Ríos Region
    14.2
  41. 41Puerto MonttLos Lagos Region
    13.8
  42. 42TemucoAraucania
    13.2
  43. 43ValdiviaLos Ríos Region
    13.1
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 2026 · Chile now

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

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