San Antonio vs Corpus Christi Air Quality Comparison
Which city has cleaner air right now, from the latest EPA AirNow AQI
As of September 23, 2026, Corpus Christi, TX has cleaner air than San Antonio, TX — AQI 52 (Moderate) vs 55 (Moderate), a gap of 3 AQI points in the latest EPA AirNow observations. Lower AQI means cleaner air. San Antonio's reading is driven by PM2.5 and Corpus Christi's by PM2.5.
San Antonio, TX
Moderate
Corpus Christi, TX
Moderate
Summary
Corpus Christi has 3 points better air quality
Corpus Christi has an AQI of 52 compared to 55
Extra Protection for San Antonio Homes
Air quality in San Antonio 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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