SmogRank / Countries / Mexico / 2026
Most polluted cities in Mexico, 2026
42 cities in Mexico ranked by their average PM2.5 so far (273 of 365 days); 42 above the WHO annual guideline (5.0 µg/m³). Worst: Hacienda Santa Fe at 32.9 µg/m³, #103 of 2,181 cities in the world. Cleanest: García at 11.2. A city needs measurements on 70% of the days to be ranked.
- 1Hacienda Santa FeJalisco 32.96.6×
- 2TuxtlaChiapas 30.36.1×
- 3AguascalientesAguascalientes 26.55.3×
- 4San Luis PotosíSan Luis Potosí 25.75.1×
- 5TlaquepaqueJalisco 24.74.9×
- 6PueblaPuebla 24.04.8×
- 7Naucalpan de JuárezMéxico 22.44.5×
- 8Ciudad NezahualcoyotlMéxico 22.14.4×
- 9GuadalajaraJalisco 20.34.1×
- 10Mexico CityMexico City 20.04.0×
- 11CuautlaMorelos 19.23.8×
- 12Pachuca de SotoHidalgo 19.03.8×
- 13Mixquiahuala de JuárezHidalgo 18.63.7×
- 14Zacatepec de HidalgoMorelos 18.33.7×
- 15Santa AnitaJalisco 17.83.6×
- 15CelayaGuanajuato 17.83.6×
- 17Santa CatarinaNuevo León 17.53.5×
- 18Ciudad General EscobedoNuevo León 17.43.5×
- 19Parque Industrial Ciudad MitrasNuevo León 17.03.4×
- 20IrapuatoGuanajuato 16.73.3×
- 21SalamancaGuanajuato 16.63.3×
- 21Ciudad Benito JuárezNuevo León 16.63.3×
- 23León de los AldamaGuanajuato 16.53.3×
- 24TehuacánPuebla 16.13.2×
- 25MexicaliBaja California 15.83.2×
- 26San Luis de la PazGuanajuato 15.63.1×
- 26MonterreyNuevo León 15.63.1×
- 28Santiago de QuerétaroQuerétaro 15.43.1×
- 29TulancingoHidalgo 15.23.0×
- 29CuernavacaMorelos 15.23.0×
- 31Tula de AllendeHidalgo 14.93.0×
- 31ZapopanJalisco 14.93.0×
- 33Ciudad ApodacaNuevo León 14.72.9×
- 34Cadereyta JiménezNuevo León 14.52.9×
- 35San Juan del RíoQuerétaro 14.42.9×
- 36La Providencia Siglo XXIHidalgo 14.32.9×
- 37TijuanaBaja California 12.92.6×
- 38San Miguel de AllendeGuanajuato 12.62.5×
- 38AbasoloGuanajuato 12.62.5×
- 40Ciudad JuárezChihuahua 12.32.5×
- 41GuanajuatoGuanajuato 12.12.4×
- 42GarcíaNuevo León 11.22.2×
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+