What is the air quality in Mexico City?

Mexico City, Mexico has an annual US AQI of 90 (Polluted) and average PM2.5 of 23.5 µg/m³, ranking #4239 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Mexico City?

September is typically the cleanest month (AQI 67) and May the most polluted (AQI 128).

Where does Mexico City's air quality data come from?

PM2.5: 1998–2026 (monitors 2003–2026, satellite 1998–2003, 2016, 2022–2024; 2025–2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Mexico City, Mexico — Air Quality & Clean City Guide 2026

Mexico City Air Quality Data

Global rank	City	Continent	AQI	PM2.5
4239	Mexico City, Mexico	North America	AQI 90	PM2.5 23.5 µg/m³