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)
77 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
Air Quality Index (AQI)
50 
Good
Health Message: None
AQI - Pollutant Details
Ozone
77 
Moderate
Particles (PM2.5)
68 
Moderate
Particles (PM2.5)
50 
Good
Ozone
47 
Good
Forecast Discussion: It will finally be a bit cooler on Friday, although temperatures will still be about 8-10 °F above average and the humidity will linger. A weak “back door” (north to south moving) cold front will move through the Philadelphia metropolitan area overnight into Friday morning. Winds will shift northeasterly to easterly behind the front, which will bring in cooler maritime air into the forecast area. The air arriving behind the cold front is clean and less humid, but it will be slow to filter in. Skies will be partly cloudy with a chance for an afternoon thunderstorm. As a result, both ozone and particle concentrations will decrease compared to Thursday, but they will remain in the Moderate range. **Extended Forecast: The Labor Day weekend will be a pleasant respite to the heat wave that has impacted the Delaware Valley this week. Both days will be sunny with lower humidity and onshore winds. Temperatures on Saturday will be close to average and then start to rise again on Sunday. Air quality will return to the Good range for both days. -Huff

Current Conditions
Air Quality Index (AQI)
observed at 12:00 EDT
88
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5) 88 Moderate
Ozone 43 Good

Past Air Quality Maps and Data
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Air Quality Maps Archives (by region)

E-Mail Notification
 
Pennsylvania Air Quality Partnership Email