San Antonio Air Quality Alert: PM10 Levels Reach Unhealthy for Sensitive Groups Category
Areazine synthesizes this EPA air-quality advisory directly from EPA's official public data feed. See our methodology for full source attribution and refresh cadence.
On March 15, 2026, air quality in San Antonio, TX reached an AQI of 117 for PM10, categorized as Unhealthy for Sensitive Groups.
What this EPA air-quality advisory tells you, and what most readers miss
This notice was issued by EPA on April 6, 2026 and geographically references San Antonio, TX. Its severity classification of "low" signals how the issuing agency weighs the risk of harm if no action is taken - "critical" and "high" tier alerts typically carry direct consumer actions, while "medium" and "low" tend toward informational guidance or monitoring advisories. The category it belongs to - Air Quality - determines the informational context it sits in, and which agency or body is the authoritative source for updates.
Most readers skim a notice like this, check whether they are personally affected, and move on. The more useful lens is to verify its scope, source, and timestamp, then compare related notices without assuming that one record proves a broader trend.
Areazine pairs this record with the original agency URL so you can check the primary source before acting. Its related labels are air-quality, epa, aqi, San Antonio.
Current Air Quality
On March 15, 2026, the reporting area of San Antonio, TX, recorded an Air Quality Index (AQI) of 117. The primary pollutant of concern is PM10, which reached the "Unhealthy for Sensitive Groups" category. Other measured pollutants in the area include PM2.5, which recorded an AQI of 77 (Moderate), and Ozone (O3), which recorded an AQI of 38 (Good).
What This Means
An AQI level between 101 and 150 indicates that air quality is unhealthy for sensitive groups. At this level, members of the general public are less likely to be affected, but individuals with specific health conditions may experience adverse effects.
Who Should Take Precautions
Groups at increased risk from PM10 exposure include people with heart or lung disease, older adults, and children. These individuals should be mindful of their activity levels while air quality remains in this category.
What You Should Do
Members of sensitive groups should consider reducing prolonged or heavy outdoor exertion. While it is generally acceptable to be active outdoors, those at risk should take more breaks, choose less intense activities, and monitor for symptoms such as coughing or shortness of breath. The general public is not expected to be affected.
Source
Data provided by EPA AirNow.
Original source: EPA Official Notice ↗
Related Air Quality
All Air Quality →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this EPA air-quality advisory: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,298 characters here).
Similar severity timing
Same severity (low) notices issued closest in time to April 6, 2026.
Frequently Asked Questions
Common questions about this EPA air-quality advisory.