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
    182
  2. 2OsornoLos Lagos Region
    171
  3. 3NacimientoBiobio
    170
  4. 4LinaresMaule Region
    169
  5. 5VillarricaAraucania
    163
  6. 6CuricóMaule Region
    159
  7. 7TemucoAraucania
    158
  8. 8RancaguaO'Higgins Region
    156
  9. 9RengoO'Higgins Region
    156
  10. 10TalaganteSantiago Metropolitan
    156
  11. 11Puerto VarasLos Lagos Region
    155
  12. 12ValdiviaLos Ríos Region
    153
  13. 12SantiagoSantiago Metropolitan
    153
  14. 14San CarlosÑuble
    153
  15. 15ChillánÑuble
    146
  16. 16HualpénBiobio
    145
  17. 17Puente AltoSantiago Metropolitan
    143
  18. 18TalcaMaule Region
    143
  19. 19Los ÁngelesBiobio
    141
  20. 20HualquiBiobio
    135
  21. 21CoronelBiobio
    135
  22. 22Puerto AysénAysén
    130
  23. 22La UniónLos Ríos Region
    130
  24. 24Puerto MonttLos Lagos Region
    123
  25. 25QuilpuéValparaiso
    118
  26. 26CauquenesMaule Region
    117
  27. 27CuranilahueBiobio
    115
  28. 28QuillotaValparaiso
    111
  29. 29TalcahuanoBiobio
    99
  30. 30QuinteroValparaiso
    95
  31. 31ConcónValparaiso
    95
  32. 32ConcepciónBiobio
    92
  33. 33ChiguayanteBiobio
    90
  34. 34ToméBiobio
    88
  35. 35San Pedro de la PazBiobio
    86
  36. 36Viña del MarValparaiso
    84
  37. 37CoquimboCoquimbo Region
    83
  38. 38La SerenaCoquimbo Region
    80
  39. 39CopiapóAtacama
    80
  40. 40TocopillaAntofagasta
    77
  41. 41AricaArica y Parinacota Region
    75
  42. 42Alto HospicioTarapacá
    70
  43. 43LotaBiobio
    67
  44. 44CalamaAntofagasta
    67
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). 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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