What is the air quality in San Luis Potosí?

San Luis Potosí, Mexico has an annual US AQI of 68 (Polluted) and average PM2.5 of 16.8 µg/m³, ranking #3004 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in San Luis Potosí?

September is typically the cleanest month (AQI 58) and May the most polluted (AQI 84).

Where does San Luis Potosí's air quality data come from?

PM2.5: 1998–2026 (monitors 2019–2026, satellite 1998–2020, 2022, 2024, model 2025–2026; 2025–2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

San Luis Potosí, Mexico — Air Quality & Clean City Guide 2026

San Luis Potosí Air Quality Data

Global rank	City	Continent	AQI	PM2.5
3004	San Luis Potosí, Mexico	North America	AQI 68	PM2.5 16.8 µg/m³