SmogRank / Countries / Mexico / March 2025

Most polluted cities in Mexico, March 2025

21 cities in Mexico ranked by their average PM2.5 over the 31 days. Worst: Toluca at 39.2 µg/m³, #112 of 2,218 cities in the world. Cleanest: Tijuana at 11.7. A city needs measurements on 70% of the days to be ranked.

  1. 1TolucaMéxico
    39.2
  2. 2MexicaliBaja California
    38.2
  3. 3San Salvador TizatlalliMéxico
    35.6
  4. 4XonacatlánMéxico
    31.9
  5. 5Ciudad JuárezChihuahua
    30.6
  6. 6San Luis de la PazGuanajuato
    29.4
  7. 7Ciudad NezahualcoyotlMéxico
    29.3
  8. 8IrapuatoGuanajuato
    25.5
  9. 9Mixquiahuala de JuárezHidalgo
    24.5
  10. 10Mexico CityMexico City
    23.7
  11. 11TehuacánPuebla
    22.2
  12. 12TlaxcalaTlaxcala
    21.5
  13. 13CelayaGuanajuato
    20.7
  14. 14León de los AldamaGuanajuato
    18.7
  15. 15GuanajuatoGuanajuato
    17.9
  16. 16SalamancaGuanajuato
    17.0
  17. 17San Miguel de AllendeGuanajuato
    16.9
  18. 18TepicNayarit
    16.8
  19. 19AbasoloGuanajuato
    16.0
  20. 20ChihuahuaChihuahua
    14.7
  21. 21TijuanaBaja 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, March 2025 · Mexico now