What is the air quality in Mexicali?

Mexicali, Mexico has an annual US AQI of 74 (Polluted) and average PM2.5 of 20.7 µg/m³, ranking #3464 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Mexicali?

September is typically the cleanest month (AQI 65) and January the most polluted (AQI 93).

Where does Mexicali's air quality data come from?

PM2.5: 1998–2026 (monitors 2006–2011, 2013, 2015–2017, 2019–2026, satellite 1998–2019; 2025–2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Mexicali, Mexico — Air Quality & Clean City Guide 2026

Mexicali Air Quality Data

Global rank	City	Continent	AQI	PM2.5
3464	Mexicali, Mexico	North America	AQI 74	PM2.5 20.7 µg/m³