SmogRank / Countries / Mexico / México

Most polluted cities in México, Mexico

4 measured cities, last 24 hours; 4 above the WHO 24-hour guideline. Worst: Naucalpan de Juárez at 29.0 µg/m³, #32 in the world.

Estimated: cities without a monitor

México cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City	7-day estimate	Band
Tlalnepantla	≈ 14 µg/m³	Moderate
Cuautitlán Izcalli	≈ 14 µg/m³	Moderate
Toluca	≈ 11 µg/m³	Moderate
Ciudad López Mateos	≈ 14 µg/m³	Moderate
Ojo de Agua	≈ 14 µg/m³	Moderate
Xico	≈ 10 µg/m³	Moderate
Ixtapaluca	≈ 10 µg/m³	Moderate
Nicolás Romero	≈ 14 µg/m³	Moderate
Zumpango	≈ 15 µg/m³	Moderate
Coacalco	≈ 14 µg/m³	Moderate
Buenavista	≈ 14 µg/m³	Moderate
Cuautitlán	≈ 14 µg/m³	Moderate
Chicoloapan	≈ 10 µg/m³	Moderate
Chalco	≈ 10 µg/m³	Moderate
San Pablo de las Salinas	≈ 14 µg/m³	Moderate
Huixquilucan	≈ 12 µg/m³	Moderate
Texcoco de Mora	≈ 10 µg/m³	Moderate
Tepexpan	≈ 11 µg/m³	Moderate
Los Reyes Acaquilpan	≈ 10 µg/m³	Moderate
Fuentes del Valle	≈ 14 µg/m³	Moderate
Santa María Chimalhuacán	≈ 10 µg/m³	Moderate
San Mateo Atenco	≈ 11 µg/m³	Moderate
Tultepec	≈ 14 µg/m³	Moderate
Zinacantepec	≈ 11 µg/m³	Moderate
Santiago Teyahualco	≈ 14 µg/m³	Moderate
Teoloyucan	≈ 14 µg/m³	Moderate
San Buenaventura	≈ 10 µg/m³	Moderate
Melchor Ocampo	≈ 14 µg/m³	Moderate
Tepotzotlán	≈ 14 µg/m³	Moderate
Santa Teresa	≈ 9 µg/m³	Good
San Jerónimo Cuatro Vientos	≈ 10 µg/m³	Moderate
Coyotepec	≈ 15 µg/m³	Moderate
San Martín Azcatepec	≈ 11 µg/m³	Moderate
San Pablo Autopan	≈ 11 µg/m³	Moderate
San Isidro	≈ 10 µg/m³	Moderate
Amecameca	≈ 10 µg/m³	Moderate
San José Guadalupe Otzacatipan	≈ 11 µg/m³	Moderate
Metepec	≈ 11 µg/m³	Moderate
Tultitlán de Mariano Escobedo	≈ 14 µg/m³	Moderate
San Francisco Acuautla	≈ 10 µg/m³	Moderate

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SmogRank, most polluted cities in México, Mexico, PM2.5, last 24 hours to 1 Oct 2026, 23:00 UTC, smogrank.com/mx/region/mexico.

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Updated 2026-10-01 23:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.