San Antonio vs Fort Worth Air Quality Comparison
Which city has cleaner air right now, from the latest EPA AirNow AQI
As of September 23, 2026, San Antonio, TX has cleaner air than Fort Worth, TX — AQI 55 (Moderate) vs 112 (Unhealthy for Sensitive Groups), a gap of 57 AQI points in the latest EPA AirNow observations. Lower AQI means cleaner air. San Antonio's reading is driven by PM2.5 and Fort Worth's by O3.
San Antonio, TX
Moderate
Fort Worth, TX
Unhealthy for Sensitive Groups
Summary
San Antonio has 57 points better air quality
San Antonio has an AQI of 55 compared to 112
Reduce Indoor Ozone in Fort Worth
Today's main pollutant in Fort Worth is ground-level ozone (AQI 112). Important: standard HEPA filters do NOT remove ozone — only a purifier with a substantial activated-carbon bed adsorbs it. The biggest wins are cutting indoor sources (gas appliances, certain "ionizer" purifiers) and ventilating when outdoor ozone is low (early morning). A high-carbon unit helps with the gases and VOCs that linger indoors.
Compare activated-carbon purifiers (for gases & ozone):
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