San Antonio, TX Air Quality
Report & Trends
Analysis & History
The Verdict
Compared to other metro areas, San Antonio, TX scores poorly.
Plan your outdoor activities carefully in May, the statistical peak for AQI spikes in TX.
Health Recommendation
Sensitive groups should consider monitoring daily forecast apps significantly closer.
10-Year Annual PM2.5 Average
Analysis: Annual average Median AQI from 2015 to 2025.
Is San Antonio, TX safe from particle pollution? The data points to May being the critical month. Despite seasonal fluctuations, year-over-year averages have held steady.
Seasonal Risk Calendar
The "Smoke Season" Calendar
Values represent historical Average Monthly AQI (PM2.5). Higher is worse.
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Common Questions
When is the worst time for air quality in San Antonio, TX?
Based on 10 years of data, the worst months for air quality in San Antonio, TX are: May (AQI 89.9), June (AQI 65.9), April (AQI 65.4). These months typically see the highest concentrations of PM2.5 due to fine particulate matter trapped by local geography.
Is it safe to move to San Antonio, TX given the air quality?
Yes, but with caveats. San Antonio, TX offers an incredible quality of life, but new residents should be aware of the "pollution season." Most homes in the area need robust air filtration systems to maintain safe indoor levels during these few weeks a year.
How is the air quality changing in San Antonio, TX?
It is holding steady. While some seasons see short-term spikes, the long-term annual average for San Antonio, TX has remained consistent over the last decade, avoiding the sharp declines seen in other parts of the region.
Do I really need an air purifier in San Antonio, TX?
Based on the 10-year analysis, absolutely. The levels of PM2.5 recorded during peak events are unsafe for indoor occupation without filtration. A CADR-rated purifier is considered essential appliance for San Antonio, TX households.
How accurate is this data?
This report is built on official EPA Air Quality System (AQS) data. We aggregated daily summary files from 2014 to present to build these charts. Unlike real-time apps that estimate, this is the verified historical record.
Is San Antonio, TX safe from other disasters?
Air quality is just one factor. Check our sister site for a complete analysis of tornado, hurricane, and flood risks.
Full Safety Report →Summary
As the climate shifts, so does our definition of "Good" air. San Antonio, TX is on the front lines of this change.