The Department of Public Health provides real-time daily updates and other resources about the air quality in Philadelphia.
The air quality readings on this page use the U.S. Air Quality Index (AQI). These categories were created by the U.S. Environmental Protection Agency. Learn more about the AQI.
Read on for the current air quality, or jump to:
- Interactive map of air monitoring stations
- Other air quality resources
- Select neighborhood air quality averages
- Historical air pollution data
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 to 500
Health warning of emergency conditions: everyone is more likely to be affected.
Interactive map of air monitoring stations
This map shows the locations of the City’s air monitoring stations. Click on a station to display the latest available hourly concentration of the pollutants measured there.
Other air quality resources
- The U.S. Environmental Protection Agency’s AirNow website provides an interactive map that includes a NowCast AQI value for PM2.5, PM10, and ozone at monitoring sites where those pollutants are measured.
- For more information on individual pollutants, visit Criteria Air Pollutants.
- For more information on standards for these pollutants, see the National Ambient Air Quality Standards Table.
- Learn more about Philadelphia’s most recent air monitoring network plan through the Air Management Services reports and documents.
Select neighborhood air quality averages
The Department of Public Health is working to make it easier for residents to find information about average air quality in Philadelphia neighborhoods. Learn more about the current neighborhoods of interest.
Historical air pollution data
You can find historical air pollution data for Philadelphia and the rest of the country at Air Data: Air Quality Data Collected at Outdoor Monitors Across the United States.