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)
42 
Good
Health Message: None
Air Quality Index (AQI)
55 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5)
42 
Good
Particles (PM2.5)
55 
Moderate
Forecast Discussion: It will be a lovely Easter holiday weekend for the Philadelphia metropolitan region, with mostly sunny skies and seasonable temperatures. A weak cold front will approach Philadelphia on Saturday morning and then dissipate. The main effect will be a shift in surface wind direction to the north. Stagnation overnight will cause particle concentrations to rise during the morning hours. Transport aloft from the Central Plains, where agricultural fires are producing smoke, will also contribute to rising particle concentrations early in the day. Although northerly winds in the afternoon will ventilate the atmosphere and reduce particle concentrations, the daily average will be in the low end of the Moderate range. Surface winds will shift back onshore (east/northeast) on Sunday under the influence of surface high pressure centered over southern Canada, which will return air quality to the Good range. Rising atmospheric humidity on Monday, along with light winds in the morning, will push particle concentrations back up into the low Moderate range. **Extended Forecast: A cold front will approach from the west on Tuesday, bringing a chance for rain showers in the evening. Warm and humid conditions ahead of the front for most of the day will keep air quality in the Moderate range. -Huff

Current Conditions
Air Quality Index (AQI)
observed at 8:00 EDT
63
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5) 63 Moderate
Ozone 33 Good

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