SmogRank / World / Mexico / June 2025
Most people breathing unhealthy air in Mexico, June 2025
14 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: Mexicali, Mexico, about 138K on an average day. A city needs measurements on 70% of the days to be ranked.
About 279K people in these 14 cities breathed unhealthy air on an average day of June 2025.
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.
- 1MexicaliBaja California 138K
- 2Ciudad JuárezChihuahua 52.2K
- 3Victoria de DurangoDurango 41.5K
- 4TlaquepaqueJalisco 24.1K
- 5AguascalientesAguascalientes 24.1K
- 6Santa CatarinaNuevo León 0
- 7GuadalajaraJalisco 0
- 8MonterreyNuevo León 0
- 9Mexico CityMexico City 0
- 10ZapopanJalisco 0
- 11PueblaPuebla 0
- 12Santiago de QuerétaroQuerétaro 0
- 13TepicNayarit 0
- 14Pachuca de SotoHidalgo 0
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, June 2025 · Mexico now
Regions
Ranked cities in each region, June 2025.
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SmogRank, most polluted cities in Mexico, by people breathing unhealthy air, PM2.5, June 2025, smogrank.com/mx/history/2025-06?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.