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)
38 
Good
Health Message: None
Air Quality Index (AQI)
48 
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5)
38 
Good
Particles (PM2.5)
48 
Good
Forecast Discussion: It will be a bitterly cold weekend across the Delaware Valley. The coldest air of the winter so far will build into the forecast area on Saturday, with gusty northwesterly winds making it feel even colder. Please stay tuned to the National Weather Service for updates to Wind Advisories and Wind Chill Advisories across the region. Sunday will be colder than Saturday, but with less wind. Particles will remain in the lower part of the Good range both days due to the very dry air mass in place and ample atmospheric mixing. Temperatures will quickly rebound to around freezing on Monday in response to southerly flow ahead of a low pressure system strengthening over the Gulf Coast. This system will bring snow to the Philadelphia metropolitan area late Monday as it moves northeastward. Limited atmospheric mixing and rising humidity later in the day will cause particles to increase, but daily average air quality should remain in the Good range due to dry air in place in the morning and increasing onshore flow in the afternoon. **Extended Forecast: The low pressure system will intensify and move up the coast on Tuesday, bringing periods of heavy precipitation to the Delaware Valley. Precipitation will likely begin as snow, change to rain, and then possibly back to snow again. Strong onshore flow and heavy precipitation will push particles lower into the Good range. -Huff

Current Conditions
Air Quality Index (AQI)
observed at 2:00 EST
27
Good
Health Message: None
Note: Values above 500 are considered Beyond the AQI. Follow recommendations for the Hazardous category. Additional information on reducing exposure to extremely high levels of particle pollution is available here.
AQI - Pollutant Details
Ozone 27 Good
Particles (PM2.5) 19 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