Air Quality Alert: San Antonio, TX Reaches Unhealthy for Sensitive Groups Level
On February 20, 2026, air quality in San Antonio, TX reached an AQI of 101, categorized as Unhealthy for Sensitive Groups due to fine particulate matter (PM2.5).
Current Air Quality
On February 20, 2026, the reporting area of San Antonio, TX, recorded an Air Quality Index (AQI) of 101. The primary pollutant of concern is fine particulate matter (PM2.5), which has reached the ‘Unhealthy for Sensitive Groups’ category. Other measured pollutants include Ozone (O3) with an AQI of 18 (Good) and PM10 with an AQI of 47 (Good).
What This Means
An AQI level of 101 indicates air quality that is ‘Unhealthy for Sensitive Groups.’ At this level, the general public is unlikely to be affected, but individuals with specific health conditions may experience health effects from breathing the air.
Who Should Take Precautions
Groups at increased risk from PM2.5 exposure include people with heart or lung disease, older adults, and children. These individuals are more likely to be affected by the current air quality conditions than the general population.
What You Should Do
Sensitive groups should consider reducing prolonged or heavy outdoor exertion. While it is generally safe to be active outdoors, it is recommended to 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 at this AQI level.
Source
Data provided by EPA AirNow.
Source: EPA Official Notice