SmogRank / World / North America / Mexico / Nuevo León

Most polluted cities in Nuevo León, Mexico

4 measured cities, last 24 hours; 0 above the WHO 24-hour guideline. Worst: Ciudad General Escobedo at 12.0 µg/m³, #210 in the world.

Jalisco: 3 measured citiesNuevo León: 4 measured citiesSan Luis Potosí: 1 measured cityTamaulipasVeracruzZacatecasCoahuila#4 Monterrey: 10.0 µg/m³#3 Ciudad Apodaca: 10.3 µg/m³#2 Cadereyta Jiménez: 10.9 µg/m³#1 Ciudad General Escobedo: 12.0 µg/m³
Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.
← Ciudad General Escobedo 12.0 µg/m³ 15 µg/m³ WHO 24-hour guideline0
Every measured city in Nuevo León, Mexico, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1Ciudad General Escobedo 560.8×
  2. 2Cadereyta Jiménez 540.7×
  3. 3Ciudad Apodaca 530.7×
  4. 4Monterrey 530.7×
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Estimated: cities without a monitor

Nuevo León 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.

City7-day estimateBand
Guadalupe≈ 8 µg/m³Good
San Nicolás de los Garza≈ 8 µg/m³Good
San Pedro Garza García≈ 8 µg/m³Good
Linares≈ 6 µg/m³Good
Cadereyta≈ 10 µg/m³Moderate
Montemorelos≈ 7 µg/m³Good
Jardines de la Silla≈ 10 µg/m³Moderate
Santiago≈ 10 µg/m³Moderate
Fraccionamiento Real Palmas≈ 8 µg/m³Good
Ciudad Sabinas Hidalgo≈ 7 µg/m³Good
Ciudad de Allende≈ 7 µg/m³Good
Mitras Poniente≈ 8 µg/m³Good
Anáhuac≈ 8 µg/m³Good
Hidalgo≈ 9 µg/m³Moderate
Ciénega de Flores≈ 8 µg/m³Good

Bad-air episodes in Nuevo León

Times when many cities around here had PM2.5 at twice their usual or more on the same days.

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SmogRank, most polluted cities in Nuevo León, Mexico, PM2.5, last 24 hours to 2 Oct 2026, 09:00 UTC, smogrank.com/mx/region/nuevo-leon.

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Updated 2026-10-02 09:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.