SmogRank / Countries / Mexico / July 2026
Most polluted cities in Mexico, July 2026
44 cities in Mexico ranked by their average PM2.5 over the 31 days. Worst: Aguascalientes at 57.5 µg/m³, #15 of 2,262 cities in the world. Cleanest: Victoria de Durango at 0.0. A city needs measurements on 70% of the days to be ranked.
- 1AguascalientesAguascalientes 57.5
- 2PueblaPuebla 29.2
- 3San Luis PotosíSan Luis Potosí 27.0
- 4TuxtlaChiapas 25.2
- 5Naucalpan de JuárezMéxico 23.0
- 6Ciudad General EscobedoNuevo León 22.8
- 7Ciudad NezahualcoyotlMéxico 21.4
- 8Santa CatarinaNuevo León 20.3
- 9Parque Industrial Ciudad MitrasNuevo León 19.7
- 10Mexico CityMexico City 18.8
- 11Silao de la VictoriaGuanajuato 17.9
- 12GuadalajaraJalisco 17.6
- 13MonterreyNuevo León 17.0
- 14SalamancaGuanajuato 16.9
- 15Pachuca de SotoHidalgo 16.3
- 16TlaquepaqueJalisco 16.1
- 16León de los AldamaGuanajuato 16.1
- 16Ciudad ApodacaNuevo León 16.1
- 19Cadereyta JiménezNuevo León 14.9
- 20Ciudad Benito JuárezNuevo León 14.8
- 20CelayaGuanajuato 14.8
- 22ZapopanJalisco 14.2
- 23ChihuahuaChihuahua 14.0
- 24TulancingoHidalgo 13.9
- 25Zacatepec de HidalgoMorelos 13.8
- 26Tula de AllendeHidalgo 13.6
- 27San Juan del RíoQuerétaro 13.5
- 27San Luis de la PazGuanajuato 13.5
- 29CuautlaMorelos 13.1
- 29Santiago de QuerétaroQuerétaro 13.1
- 31IrapuatoGuanajuato 12.9
- 32TehuacánPuebla 12.8
- 33TijuanaBaja California 12.7
- 34TlaxcalaTlaxcala 12.4
- 35MexicaliBaja California 12.0
- 36GarcíaNuevo León 11.5
- 37La Providencia Siglo XXIHidalgo 11.2
- 38San Miguel de AllendeGuanajuato 11.0
- 39CuernavacaMorelos 10.6
- 40GuanajuatoGuanajuato 10.2
- 41AbasoloGuanajuato 10.0
- 42Ciudad JuárezChihuahua 9.7
- 43TepicNayarit 7.8
- 44Victoria de DurangoDurango 0.0
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+