SmogRank / Countries / Mexico / May 2026
Most polluted cities in Mexico, May 2026
41 cities in Mexico ranked by their average PM2.5 over the 31 days. Worst: Saltillo at 66.2 µg/m³, #12 of 2,243 cities in the world. Cleanest: García at 10.2. A city needs measurements on 70% of the days to be ranked.
- 1SaltilloCoahuila 66.2
- 2Hacienda Santa FeJalisco 32.5
- 3San Luis PotosíSan Luis Potosí 30.2
- 4Naucalpan de JuárezMéxico 29.6
- 5CuautlaMorelos 26.8
- 6PueblaPuebla 26.4
- 6TlaquepaqueJalisco 26.4
- 8AguascalientesAguascalientes 26.0
- 9Ciudad NezahualcoyotlMéxico 25.5
- 10MoreliaMichoacán 24.1
- 11Mexico CityMexico City 23.2
- 12Pachuca de SotoHidalgo 22.8
- 13CelayaGuanajuato 22.5
- 14Mixquiahuala de JuárezHidalgo 22.4
- 15TepicNayarit 20.0
- 16GuadalajaraJalisco 19.3
- 17TehuacánPuebla 19.2
- 18YecapixtlaMorelos 18.9
- 18Santiago de QuerétaroQuerétaro 18.9
- 20SalamancaGuanajuato 18.8
- 21León de los AldamaGuanajuato 18.7
- 22Santa AnitaJalisco 18.5
- 23Zacatepec de HidalgoMorelos 18.3
- 23TulancingoHidalgo 18.3
- 25ZapopanJalisco 18.0
- 26La Providencia Siglo XXIHidalgo 17.6
- 27Tula de AllendeHidalgo 17.4
- 28Victoria de DurangoDurango 17.3
- 29San Juan del RíoQuerétaro 16.0
- 30Santa CatarinaNuevo León 15.7
- 31MonterreyNuevo León 15.6
- 32MexicaliBaja California 14.9
- 32Ciudad General EscobedoNuevo León 14.9
- 34Parque Industrial Ciudad MitrasNuevo León 14.1
- 35Ciudad Benito JuárezNuevo León 14.0
- 36Ciudad ApodacaNuevo León 13.8
- 37Cadereyta JiménezNuevo León 12.2
- 38ChihuahuaChihuahua 11.8
- 39TijuanaBaja California 11.6
- 40Ciudad JuárezChihuahua 10.3
- 41GarcíaNuevo León 10.2
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+