SmogRank / World / Mexico / April 2024

Most people breathing unhealthy air in Mexico, April 2024

3 cities in Mexico measured at 2 or more places, ranked by how many people breathed unhealthy air on an average day over the 30 days. The most people breathing unhealthy air: Ciudad Juárez, Mexico, about 655K on an average day. A city needs measurements on 70% of the days to be ranked.

Mexico has 42 cities ranked over the last 30 days, but only 10 here: most of its monitors have no readings for April 2024 in OpenAQ's archive, where ours come from, or too few to rank. Cities missing from this board weren't clean, just not measured.

About 758K people in these 3 cities breathed unhealthy air on an average day of April 2024.

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.

← Ciudad Juárez 655K 600K0
Every city in Mexico ranked for April 2024 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. 1Ciudad JuárezChihuahua
    655K
  2. 2CelayaGuanajuato
    102K
  3. 3León de los AldamaGuanajuato
    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, April 2024 · Mexico now

Regions

Chihuahua 1Guanajuato 7Sonora 1Tamaulipas 1

Ranked cities in each region, April 2024.

Use this board

SmogRank, most polluted cities in Mexico, by people breathing unhealthy air, PM2.5, April 2024, smogrank.com/mx/history/2024-04?by=people (accessed 7 Oct 2026).

Download top 10 by average (PNG)

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.