SmogRank / World / Mexico / April 2025

Most unhealthy days in Mexico, April 2025

47 cities in Mexico ranked by their share of unhealthy days over the 30 days. The most unhealthy days: Victoria de Durango, Mexico, 16 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.

← Victoria de Durango 55% 50%0
Every city in Mexico ranked for April 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. 1Victoria de DurangoDurango
    16 of 29
  2. 2CholulaPuebla
    11 of 25
  3. 3TlaquepaqueJalisco
    13 of 30
  4. 4CuernavacaMorelos
    9 of 30
  5. 5Ciudad NezahualcoyotlMéxico
    8 of 30
  6. 6Hacienda Santa FeJalisco
    6 of 28
  7. 7TehuacánPuebla
    6 of 30
  8. 8Ciudad JuárezChihuahua
    5 of 30
  9. 9AguascalientesAguascalientes
    5 of 30
  10. 10Mixquiahuala de JuárezHidalgo
    4 of 30
  11. 11Zacatepec de HidalgoMorelos
    3 of 23
  12. 12San Luis de la PazGuanajuato
    3 of 27
  13. 13MexicaliBaja California
    3 of 27
  14. 14Atotonilco de TulaHidalgo
    3 of 28
  15. 15SaltilloCoahuila
    2 of 21
  16. 16ChihuahuaChihuahua
    2 of 29
  17. 17Mexico CityMexico City
    2 of 30
  18. 18Cadereyta JiménezNuevo León
    1 of 22
  19. 19TulancingoHidalgo
    1 of 26
  20. 20León de los AldamaGuanajuato
    1 of 26
  21. 21MonterreyNuevo León
    1 of 30
  22. 22PueblaPuebla
    0 of 29
  23. 23IrapuatoGuanajuato
    0 of 26
  24. 24GuadalajaraJalisco
    0 of 30
  25. 25GarcíaNuevo León
    0 of 21
  26. 26Ciudad Benito JuárezNuevo León
    0 of 30
  27. 27TepicNayarit
    0 of 30
  28. 28Jardines de la SillaNuevo León
    0 of 24
  29. 29Silao de la VictoriaGuanajuato
    0 of 26
  30. 30San Juan del RíoQuerétaro
    0 of 22
  31. 31ZapopanJalisco
    0 of 30
  32. 32CelayaGuanajuato
    0 of 28
  33. 33San Miguel de AllendeGuanajuato
    0 of 25
  34. 34SalamancaGuanajuato
    0 of 27
  35. 35Santa AnitaJalisco
    0 of 25
  36. 36San MarcosHidalgo
    0 of 28
  37. 36La Providencia Siglo XXIHidalgo
    0 of 30
  38. 38San Luis PotosíSan Luis Potosí
    0 of 29
  39. 39Ciudad General EscobedoNuevo León
    0 of 22
  40. 40Santa CatarinaNuevo León
    0 of 29
  41. 41Pachuca de SotoHidalgo
    0 of 28
  42. 42AbasoloGuanajuato
    0 of 24
  43. 43TijuanaBaja California
    0 of 29
  44. 44MéridaYucatán
    0 of 22
  45. 45Heroica MatamorosTamaulipas
    0 of 28
  46. 46La PazBaja California Sur
    0 of 27
  47. 47NogalesSonora
    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, April 2025 · Mexico now

Regions

Aguascalientes 1Baja California 2Baja California Sur 1Chihuahua 2Coahuila 1Durango 1Guanajuato 8Hidalgo 6Jalisco 5México 1Mexico City 1Morelos 2Nayarit 1Nuevo León 7Puebla 3Querétaro 1San Luis Potosí 1Sonora 1Tamaulipas 1Yucatán 1

Ranked cities in each region, April 2025.

Use this board

SmogRank, most polluted cities in Mexico, by unhealthy days, PM2.5, April 2025, smogrank.com/mx/history/2025-04?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.