San Antonio Air Quality Reaches Unhealthy Levels for Sensitive Groups

Current Air Quality

In San Antonio, TX, the air quality index (AQI) reached a peak of 121 on February 19, 2026. The primary pollutant of concern is fine particulate matter (PM2.5), which is currently in the “Unhealthy for Sensitive Groups” category. Other measured pollutants include Ozone (O3) at a “Good” level of 19 and PM10 at a “Moderate” level of 53.

What This Means

An AQI level of 121 falls into the “Unhealthy for Sensitive Groups” category. This indicates that air quality is unhealthy for members of sensitive groups, though the general public is less likely to be affected.

Who Should Take Precautions

Groups at higher risk include people with heart or lung disease, older adults, children, and people with diabetes. These individuals are more sensitive to the effects of fine particulate matter (PM2.5).

What You Should Do

People in sensitive groups should reduce prolonged or heavy exertion outdoors. It is recommended to take more breaks and engage in less intense activities. Watch for symptoms such as coughing or shortness of breath. The general public can continue normal outdoor activities.

Source

Data provided by EPA AirNow.