SmogRank / World / Mexico / June 2025

Most unhealthy days in Mexico, June 2025

35 cities in Mexico ranked by their share of unhealthy days over the 30 days. The most unhealthy days: Cholula, Mexico, 6 of 29 measured days. 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.

← Cholula 21% 20%0
Every city in Mexico ranked for June 2025, 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. 1CholulaPuebla
    6 of 29
  2. 2MexicaliBaja California
    4 of 30
  3. 3Atotonilco de TulaHidalgo
    3 of 30
  4. 4Victoria de DurangoDurango
    2 of 25
  5. 5Hacienda Santa FeJalisco
    1 of 26
  6. 6TlaquepaqueJalisco
    1 of 27
  7. 7ChihuahuaChihuahua
    1 of 28
  8. 8Ciudad JuárezChihuahua
    1 of 29
  9. 9AguascalientesAguascalientes
    1 of 30
  10. 10Naucalpan de JuárezMéxico
    0 of 27
  11. 11Tepeji del Río de OcampoHidalgo
    0 of 22
  12. 12Santa CatarinaNuevo León
    0 of 25
  13. 13TijuanaBaja California
    0 of 29
  14. 14SaltilloCoahuila
    0 of 23
  15. 15Ciudad Benito JuárezNuevo León
    0 of 27
  16. 16GuadalajaraJalisco
    0 of 27
  17. 17MonterreyNuevo León
    0 of 30
  18. 18Mexico CityMexico City
    0 of 30
  19. 19ZapopanJalisco
    0 of 30
  20. 19Santa AnitaJalisco
    0 of 27
  21. 21TehuacánPuebla
    0 of 24
  22. 22PueblaPuebla
    0 of 30
  23. 23Mixquiahuala de JuárezHidalgo
    0 of 30
  24. 24TulancingoHidalgo
    0 of 29
  25. 25San Martin Texmelucan de LabastidaPuebla
    0 of 28
  26. 26San MarcosHidalgo
    0 of 29
  27. 27Santiago de QuerétaroQuerétaro
    0 of 30
  28. 28Heroica MatamorosTamaulipas
    0 of 25
  29. 29TepicNayarit
    0 of 30
  30. 30TlaxcalaTlaxcala
    0 of 30
  31. 31San Luis PotosíSan Luis Potosí
    0 of 29
  32. 32San Juan del RíoQuerétaro
    0 of 29
  33. 33NogalesSonora
    0 of 30
  34. 34La Providencia Siglo XXIHidalgo
    0 of 30
  35. 35Pachuca de SotoHidalgo
    0 of 30
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, June 2025 · Mexico now

Regions

Aguascalientes 1Baja California 2Chihuahua 2Coahuila 1Durango 1Hidalgo 7Jalisco 5México 1Mexico City 1Nayarit 1Nuevo León 3Puebla 4Querétaro 2San Luis Potosí 1Sonora 1Tamaulipas 1

Ranked cities in each region, June 2025.

Use this board

SmogRank, most polluted cities in Mexico, by unhealthy days, PM2.5, June 2025, smogrank.com/mx/history/2025-06?by=days (accessed 7 Oct 2026).

Download top 10 by average (PNG)

You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.