SmogRank / World / Mexico / August 2023

Most polluted cities in Mexico, August 2023

33 cities in Mexico ranked by their average PM2.5 over the 31 days. Worst: Mexicali at 32.1 µg/m³, #50 of 1,926 cities in the world. Cleanest: Nogales at 7.4. A city needs measurements on 70% of the days to be ranked.

Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.

← Victoria de Durango 13% 10%0
Every city in Mexico ranked for August 2023, one column each, ranked by unhealthy days: height is the share of its measured days that were unhealthy, colour its average. Point at it to read a city; tap to open it.
  1. 1Victoria de DurangoDurango
    13%
  2. 2MexicaliBaja California
    12%
  3. 3XonacatlánMéxico
    8%
  4. 4San Antonio la IslaMéxico
    4%
  5. 5CuernavacaMorelos
    4%
  6. 6Santiaguito TlalcilalcalliMéxico
    0%
  7. 7TolucaMéxico
    0%
  8. 8Santa CatarinaNuevo León
    0%
  9. 9Ciudad JuárezChihuahua
    0%
  10. 10Ciudad Benito JuárezNuevo León
    0%
  11. 11Atotonilco de TulaHidalgo
    0%
  12. 12CelayaGuanajuato
    0%
  13. 13Naucalpan de JuárezMéxico
    0%
  14. 14HuichapanHidalgo
    0%
  15. 15MonterreyNuevo León
    0%
  16. 16TijuanaBaja California
    0%
  17. 17Tepeji del Río de OcampoHidalgo
    0%
  18. 18Jardines de la SillaNuevo León
    0%
  19. 19GuadalajaraJalisco
    0%
  20. 20San Andrés TuxtlaVeracruz
    0%
  21. 21Cadereyta JiménezNuevo León
    0%
  22. 22Mexico CityMexico City
    0%
  23. 23San Luis de la PazGuanajuato
    0%
  24. 24TlaxcoapanHidalgo
    0%
  25. 25PueblaPuebla
    0%
  26. 25León de los AldamaGuanajuato
    0%
  27. 27GuanajuatoGuanajuato
    0%
  28. 28Santiago de QuerétaroQuerétaro
    0%
  29. 29Pachuca de SotoHidalgo
    0%
  30. 30San Miguel de AllendeGuanajuato
    0%
  31. 31IrapuatoGuanajuato
    0%
  32. 32AbasoloGuanajuato
    0%
  33. 33NogalesSonora
    0%
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, August 2023 · Mexico now

Regions

Baja California 2Chihuahua 1Durango 1Guanajuato 7Hidalgo 5Jalisco 1México 5Mexico City 1Morelos 1Nuevo León 5Puebla 1Querétaro 1Sonora 1

Ranked cities in each region, August 2023.

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SmogRank, most polluted cities in Mexico, PM2.5, August 2023, smogrank.com/mx/history/2023-08 (accessed 7 Oct 2026).

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