What is the air quality in Silao?

Silao, Mexico has an annual US AQI of 66 (Polluted) and average PM2.5 of 16.8 µg/m³, ranking #2819 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Silao?

October is typically the cleanest month (AQI 56) and May the most polluted (AQI 81).

Where does Silao's air quality data come from?

PM2.5: 1998–2026 (monitors 2012, 2020, 2023–2026, satellite 1998–2024, model 2025; 2025–2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Silao, Mexico — Air Quality & Clean City Guide 2026

Silao Air Quality Data

Global rank	City	Continent	AQI	PM2.5
2819	Silao, Mexico	North America	AQI 66	PM2.5 16.8 µg/m³