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)
82 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Air Quality Index (AQI)
105 
Unhealthy for Sensitive Groups
Health Message: People with heart or lung disease, older adults, and children should reduce prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5)
82 
Moderate
Particles (PM2.5)
105 
Unhealthy for Sensitive Groups
Forecast Discussion: A period of poor air quality is possible this weekend, with particle concentrations peaking on Sunday. A strong Arctic high pressure system will slowly move overhead on Saturday and Sunday morning. As a result, surface winds will stagnate Saturday evening through Sunday afternoon. A persistent layer of snow on the ground will support formation of morning surface inversions that will trap pollutants. Sunny skies on Saturday will promote vertical mixing of the atmosphere, which should limit particle concentrations to the upper Moderate range. **Extended Forecast: On Sunday, clouds will increase ahead of an approaching cold front. Cloud cover will limit vertical mixing, and carry-over of pollutants from Saturday will contribute to rising particle concentrations. In addition, a wintery mix of precipitation beginning on Sunday afternoon will increase atmospheric humidity, which will promote particle formation. Consequently, particle concentrations will likely reach the Code Orange (Unhealthy for Sensitive Groups) range on Sunday. The cold front will move through the Philadelphia metropolitan area late Monday morning. Particle concentrations will begin the day in the upper Moderate to USG range, and fall gradually as winds pick up in the afternoon behind the cold front, with daily average air quality in the mid-to-upper Moderate range. -Huff

Current Conditions
Air Quality Index (AQI)
observed at 11:00 EST
52
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5) 52 Moderate
Ozone 30 Good

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E-Mail Notification
 
Pennsylvania Air Quality Partnership Email