What is the air quality in San Antonio TX?

San Antonio TX, United States of America has an annual US AQI of 50 (Reasonable) and average PM2.5 of 9.8 µg/m³, ranking #746 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in San Antonio TX?

November is typically the cleanest month (AQI 44) and May the most polluted (AQI 57).

Where does San Antonio TX's air quality data come from?

PM2.5: 1998–2026 (monitors 1999–2003, 2005–2026, satellite 1998–2000, 2003–2004, 2023; 2026 provisional (AirNow)). Measured by government monitoring stations. Full sources are on the methodology page.

San Antonio TX, United States of America — Air Quality & Clean City Guide 2026

San Antonio TX Air Quality Data

Global rank	City	Continent	AQI	PM2.5
746	San Antonio TX, United States of America	North America	AQI 50	PM2.5 9.8 µg/m³