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 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)
52 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Air Quality Index (AQI)
46 
Good
Health Message: None
AQI - Pollutant Details
Ozone
49 
Good
Particles (PM2.5)
52 
Moderate
Ozone
46 
Good
Particles (PM2.5)
40 
Good
Forecast Discussion: It will a dreary but slightly cooler weekend for the Delaware Valley. Temperatures will be seasonable, which will be a relief after the recent extended heat wave, but humidity will persist at uncomfortable levels. A frontal boundary will remain stalled to the south of the forecast area through the weekend, which will keep the weather unsettled. On Saturday, clouds and thunderstorms will develop in the afternoon, with periods of heavy rain possible. While particles will be in the low Moderate range due to the high humidity, cloudy skies will limit ozone to the Good range. Another round of heavy rain is expected Sunday morning, with scattered thunderstorms possible in the afternoon. Southeasterly surface winds will usher clean, maritime air into the Philadelphia metropolitan area. Ozone and particles both be in the Good range as a result. There may be some breaks of sunshine on Monday, but scattered afternoon thunderstorms will limit ozone to the Good/Moderate threshold, while particles will remain in the Good range. **Extended Forecast: Scattered afternoon thunderstorms are still a possibility across the Philadelphia metropolitan area on Tuesday, but in general, mostly sunny skies will allow ozone to climb into the low Moderate range. Particles will linger in the Good range due to decreasing humidity. -Brown/Huff

Current Conditions
Air Quality Index (AQI)
observed at 14:00 EDT
90
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
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 90 Moderate
Particles (PM2.5) 62 Moderate

Past Air Quality Maps and Data
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E-Mail Notification
 
Pennsylvania Air Quality Partnership Email