SmogRank / Countries / Mexico / October 2025
Most polluted cities in Mexico, October 2025
44 cities in Mexico ranked by their average PM2.5 over the 31 days. Worst: Saltillo at 40.0 µg/m³, #116 of 2,110 cities in the world. Cleanest: Victoria de Durango at 1.3. A city needs measurements on 70% of the days to be ranked.
- 1SaltilloCoahuila 40.0
- 2CholulaPuebla 28.7
- 3XonacatlánMéxico 26.6
- 4San Salvador TizatlalliMéxico 23.8
- 5TuxtlaChiapas 22.5
- 6Santa CatarinaNuevo León 19.8
- 7Ciudad Benito JuárezNuevo León 19.7
- 8GarcíaNuevo León 19.1
- 9Hacienda Santa FeJalisco 19.0
- 10Naucalpan de JuárezMéxico 17.2
- 11SalamancaGuanajuato 17.1
- 12TlaquepaqueJalisco 17.0
- 13MexicaliBaja California 16.3
- 14TijuanaBaja California 16.1
- 15Mexico CityMexico City 15.3
- 16PueblaPuebla 15.1
- 17Santa AnitaJalisco 14.6
- 17MoreliaMichoacán 14.6
- 19Cadereyta JiménezNuevo León 14.3
- 20León de los AldamaGuanajuato 14.0
- 20Ciudad ApodacaNuevo León 14.0
- 22Mixquiahuala de JuárezHidalgo 13.9
- 23MonterreyNuevo León 13.8
- 24AguascalientesAguascalientes 13.6
- 25San Luis de la PazGuanajuato 13.2
- 26Tula de AllendeHidalgo 13.1
- 27Zacatepec de HidalgoMorelos 12.9
- 28ChihuahuaChihuahua 12.6
- 29TepicNayarit 12.2
- 30Ciudad JuárezChihuahua 11.8
- 31ZapopanJalisco 11.7
- 32CelayaGuanajuato 11.6
- 33CuernavacaMorelos 11.3
- 34Santiago de QuerétaroQuerétaro 10.9
- 35San Miguel de AllendeGuanajuato 10.8
- 36TulancingoHidalgo 10.7
- 37CuautlaMorelos 10.6
- 38TehuacánPuebla 10.5
- 39MéridaYucatán 10.2
- 40San Juan del RíoQuerétaro 9.8
- 41La Providencia Siglo XXIHidalgo 9.4
- 42IrapuatoGuanajuato 9.2
- 43Pachuca de SotoHidalgo 7.6
- 44Victoria de DurangoDurango 1.3
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+