Due to extremely hot weather, the City is implementing a Heat Health Emergency. You can find Cooling Centers, pools, spraygrounds, recreation centers, libraries with extended hours, and older adult centers on our interactive map. For help call the heatline at (215) 765-9040.
In effect: noon on Wednesday, July 17 to 11:00 p.m. on Monday, July 22

Trees, parks & the environment

Air quality

Current conditions in Philadelphia

AQI basics for ozone and particle pollution


Good — 0 to 50

Air quality is satisfactory, and air pollution poses little or no risk.


Moderate — 51 to 100

Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.


Unhealthy for Sensitive Groups — 101 to 150

Members of sensitive groups may experience health effects. The general public is less likely to be affected.


Unhealthy — 151 to 200

Some members of the general public may experience health effects. Members of sensitive groups may experience more serious health effects.


Very Unhealthy — 201 to 300

Health alert: The risk of health effects is increased for everyone.


Hazardous — 301 and higher

Health warning of emergency conditions: everyone is more likely to be affected.