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

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Air Quality Forecast
Today's High Tomorrow's High
Air Quality Index (AQI)
84 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
Air Quality Index (AQI)
93 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
AQI - Pollutant Details
Ozone
84 
Moderate
Particles (PM2.5)
59 
Moderate
Ozone
93 
Moderate
Particles (PM2.5)
63 
Moderate
Forecast Discussion: The air mass in place over the Delaware Valley has finally begun to modify. As of 2 PM Saturday, ozone and particle concentrations are on the rise locally and across the Mid-Atlantic region. A late summer heat wave will be getting underway on Sunday, as temperatures reach into the low 90s °F and dew points continue to rise steadily into the 60s °F, which will make for a hot and sticky end to the weekend. Mostly sunny skies and light southwesterly surface winds will allow ozone to reach the upper Moderate range. Particles will approach the mid-Moderate range in response to stagnation and rising humidity. **Extended Forecast: The heat wave will continue on Monday and Tuesday. Transported smoke from the western U.S. wildfires may reach the forecast area beginning on Monday, which will push particles higher into the mid-Moderate range. Ozone will remain in the upper Moderate range, and may reach the Code Orange (Unhealthy for Sensitive Groups; USG) range on Tuesday. An increase in clouds and the chance for scattered afternoon thunderstorms on Monday may be sufficient to limit ozone to the Moderate range. On Tuesday, a weak “back door” cold front may arrive from the northeast, which could also help to keep ozone out of the USG range. Nevertheless, a period of deteriorating air quality appears likely for the Philadelphia metropolitan area next week. -Huff

Current Conditions
Air Quality Index (AQI)
observed at 1:00 EDT
59
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5) 59 Moderate
Ozone 31 Good

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