Dallas vs San Antonio Air Quality Comparison
Which city has cleaner air right now, from the latest EPA AirNow AQI
As of September 16, 2026, San Antonio, TX has cleaner air than Dallas, TX — AQI 52 (Moderate) vs 55 (Moderate), a gap of 3 AQI points in the latest EPA AirNow observations. Lower AQI means cleaner air. Dallas's reading is driven by PM2.5 and San Antonio's by PM2.5.
Dallas, TX
Moderate
San Antonio, TX
Moderate
Summary
San Antonio has 3 points better air quality
San Antonio has an AQI of 52 compared to 55
Extra Protection for Dallas Homes
Air quality in Dallas is moderate (AQI 55), with fine particles (PM2.5) the main concern. A True-HEPA purifier gives sensitive groups — kids, seniors and anyone with asthma or allergies — cleaner air indoors on days like today.
Compare top-rated True-HEPA purifiers:
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