Philadelphia
 
Data courtesy of:
 

 
AQI: Good (0 - 50) AQI: Moderate (51 - 100) AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy (151 - 200) AQI: Very Unhealthy (201 - 300) AQI: Hazardous(301 - 500) Action DayAction Day
 
Local Air Quality Resources
Current Air Quality Index | Forecast | Ozone Action Program
 
State Air Quality Resources
Air Quality Partnership of Lehigh Valley - Berks
Air Quality Partnership of the Delaware Valley
Air Quality Partnership of the Susquehanna Valley
American Lung Association (ALA) of Pennsylvania
PA Allergy & Asthma Association
Pennsylvania DEP - BAQ - Contacts
Pennsylvania DEP - BAQ - Current Air Quality Index (AQI) by Area
Pennsylvania DEP - Bureau of Air Quality (BAQ)
Pennsylvania DEP – Air Quality Forecast Home Page
Pennsylvania DEP – Home Page
Southwest PA Air Quality Partnership
Air Quality Forecast
Today's High Tomorrow's High
Air Quality Index (AQI)
49 
Good
Health Message: None
Air Quality Index (AQI)
64 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
AQI - Pollutant Details
Ozone
49 
Good
Particles (PM2.5)
33 
Good
Ozone
64 
Moderate
Particles (PM2.5)
48 
Good
Forecast Discussion: The Memorial Day weekend will start on the cool side courtesy of a Canadian air mass that will briefly build into the Mid-Atlantic region. High temperatures will be 8-10 °F below average, with very low atmospheric humidity. Sunny skies and light winds will allow for some ozone formation, but the air mass will be low in ozone precursors, which will limit daily ozone to the Good range. Particles will also be in the Good range due to the very dry air. **Extended Forecast: Sunday will be the beginning of a warming trend that will extend through most of next week. A ridge of high pressure will build over the region, and southwesterly winds will bring warmer and more humid air into the metro Philly area. Ozone will respond by rising into the Moderate range; particles will also rise and reach the upper Good range. Memorial Day will be very warm and increasingly humid, with temperatures reaching the mid-80s °F. Ozone and particle concentrations will continue to rise, with ozone reaching the mid-Moderate range and particles breaking into the low Moderate range. -Huff

Current Conditions
Air Quality Index (AQI)
observed at 7:00 EDT
40
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5) 40 Good
Ozone 29 Good

Past Air Quality Maps and Data
Yesterday's Maps and Data
Air Quality Maps Archives (by region)

E-Mail Notification
 
Pennsylvania Air Quality Partnership Email