SmogRank / World / Chile / July 2025

Most polluted cities in Chile, July 2025

44 cities in Chile ranked by their average PM2.5 over the 31 days. Worst: Coyhaique at 99.3 µg/m³, #2 of 2,499 cities in the world. Cleanest: Calama at 17.7. A city needs measurements on 70% of the days to be ranked.

← Coyhaique 99.3
Every city in Chile ranked for July 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. 1CoyhaiqueAysén
    99.3
  2. 2OsornoLos Lagos Region
    84.2
  3. 3NacimientoBiobio
    82.0
  4. 4LinaresMaule Region
    81.6
  5. 5VillarricaAraucania
    73.2
  6. 6CuricóMaule Region
    67.3
  7. 7TemucoAraucania
    65.6
  8. 8RancaguaO'Higgins Region
    62.7
  9. 9RengoO'Higgins Region
    62.3
  10. 10TalaganteSantiago Metropolitan
    62.2
  11. 11Puerto VarasLos Lagos Region
    61.2
  12. 12ValdiviaLos Ríos Region
    57.8
  13. 12SantiagoSantiago Metropolitan
    57.8
  14. 14San CarlosÑuble
    57.7
  15. 15ChillánÑuble
    53.9
  16. 16HualpénBiobio
    53.2
  17. 17Puente AltoSantiago Metropolitan
    52.7
  18. 18TalcaMaule Region
    52.4
  19. 19Los ÁngelesBiobio
    51.8
  20. 20HualquiBiobio
    49.5
  21. 21CoronelBiobio
    49.4
  22. 22Puerto AysénAysén
    47.1
  23. 22La UniónLos Ríos Region
    47.1
  24. 24Puerto MonttLos Lagos Region
    44.5
  25. 25QuilpuéValparaiso
    42.5
  26. 26CauquenesMaule Region
    41.8
  27. 27CuranilahueBiobio
    41.2
  28. 28QuillotaValparaiso
    39.4
  29. 29TalcahuanoBiobio
    34.6
  30. 30QuinteroValparaiso
    32.6
  31. 31ConcónValparaiso
    32.5
  32. 32ConcepciónBiobio
    30.9
  33. 33ChiguayanteBiobio
    30.2
  34. 34ToméBiobio
    28.8
  35. 35San Pedro de la PazBiobio
    28.0
  36. 36Viña del MarValparaiso
    27.0
  37. 37CoquimboCoquimbo Region
    26.2
  38. 38La SerenaCoquimbo Region
    24.8
  39. 39CopiapóAtacama
    24.4
  40. 40TocopillaAntofagasta
    23.0
  41. 41AricaArica y Parinacota Region
    21.8
  42. 42Alto HospicioTarapacá
    19.2
  43. 43LotaBiobio
    17.8
  44. 44CalamaAntofagasta
    17.7
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, July 2025 · Chile now

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SmogRank, most polluted cities in Chile, PM2.5, July 2025, smogrank.com/cl/history/2025-07 (accessed 2 Oct 2026).

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