SmogRank / Countries / Mexico / May 2023

Most polluted cities in Mexico, May 2023

12 cities in Mexico ranked by their average PM2.5 over the 31 days. Worst: Celaya at 37.9 µg/m³, #15 of 1,267 cities in the world. Cleanest: Tijuana at 11.7. A city needs measurements on 70% of the days to be ranked.

  1. 1CelayaGuanajuato
    37.9
  2. 2SalamancaGuanajuato
    30.0
  3. 3León de los AldamaGuanajuato
    26.5
  4. 4Silao de la VictoriaGuanajuato
    25.2
  5. 5Mexico CityMexico City
    23.2
  6. 6AbasoloGuanajuato
    23.0
  7. 7IrapuatoGuanajuato
    22.8
  8. 7GuanajuatoGuanajuato
    22.8
  9. 9Ciudad JuárezChihuahua
    19.4
  10. 10San Miguel de AllendeGuanajuato
    18.7
  11. 11San Luis de la PazGuanajuato
    18.3
  12. 12TijuanaBaja California
    11.7
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

All cities in the world, May 2023 · Mexico now

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SmogRank, most polluted cities in Mexico, PM2.5, May 2023, smogrank.com/mx/history/2023-05 (accessed 2 Oct 2026).

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