What is the air quality in Houston TX?

Houston TX, United States of America has an annual US AQI of 57 (Reasonable) and average PM2.5 of 12.3 µg/m³, ranking #1562 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Houston TX?

January is typically the cleanest month (AQI 55) and July the most polluted (AQI 60).

Where does Houston TX's air quality data come from?

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

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

Houston TX Air Quality Data

Global rank	City	Continent	AQI	PM2.5
1562	Houston TX, United States of America	North America	AQI 57	PM2.5 12.3 µg/m³