Philadelphia Air Quality Reaches Unhealthy for Sensitive Groups Level

Current Air Quality

In Philadelphia, PA, the air quality index (AQI) reached a peak of 104 on February 18, 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) with an AQI of 19 (Good) and PM10 with an AQI of 35 (Good).

What This Means

An AQI level of 104 is classified by the EPA as Unhealthy for Sensitive Groups. At this level, air quality is acceptable for the general public, but members of sensitive groups may experience health effects from breathing the air.

Who Should Take Precautions

Sensitive groups include people with heart or lung disease, older adults, children, and teenagers. These individuals are at greater risk from exposure to fine particulate matter (PM2.5) compared to the general population.

What You Should Do

Members of sensitive groups should consider reducing prolonged or heavy exertion outdoors. It is recommended to choose less strenuous activities, shorten the amount of time you are active outdoors, or plan outdoor activities for when air quality is better. The general public is less likely to be affected at this AQI level.

Source

Data provided by EPA AirNow.