SmogRank / World / Mexico / December 2023

Most people breathing unhealthy air in Mexico, December 2023

13 cities in Mexico measured at 2 or more places, ranked by how many people breathed unhealthy air on an average day over the 31 days. The most people breathing unhealthy air: Tlaquepaque, Mexico, about 416K on an average day. A city needs measurements on 70% of the days to be ranked.

About 1.88M people in these 13 cities breathed unhealthy air on an average day of December 2023.

Ranked by people: each city's population times its share of unhealthy days, those with a daily mean over 35.4 µg/m³ (US AQI 101+). That is how many people living there breathed unhealthy air on an average day. Only cities measured at 2 or more places at least 3 km apart are ranked: one monitor shouldn't speak for a whole city. Population is the city itself, not its wider metro area.

← Tlaquepaque 416K 400K0
Every city in Mexico ranked for December 2023 with monitors in two or more places, one column each, ranked by people breathing unhealthy air: height is people on an average day, colour its average. Point at it to read a city; tap to open it.
  1. 1TlaquepaqueJalisco
    416K
  2. 2Victoria de DurangoDurango
    329K
  3. 3ZapopanJalisco
    328K
  4. 4GuadalajaraJalisco
    247K
  5. 5MexicaliBaja California
    200K
  6. 6MonterreyNuevo León
    110K
  7. 7Santa CatarinaNuevo León
    78.5K
  8. 8Ciudad General EscobedoNuevo León
    58.7K
  9. 9León de los AldamaGuanajuato
    52.7K
  10. 10Santiago de QuerétaroQuerétaro
    51.4K
  11. 11CelayaGuanajuato
    11K
  12. 12Ciudad JuárezChihuahua
    0
  13. 13PueblaPuebla
    0
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

All cities in the world, December 2023 · Mexico now

Regions

Baja California 2Chihuahua 1Coahuila 1Durango 1Guanajuato 8Hidalgo 5Jalisco 3México 3Morelos 1Nuevo León 6Puebla 5Querétaro 2Sonora 1

Ranked cities in each region, December 2023.

Use this board

SmogRank, most polluted cities in Mexico, by people breathing unhealthy air, PM2.5, December 2023, smogrank.com/mx/history/2023-12?by=people (accessed 7 Oct 2026).

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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.