Philadelphia
 
Data and Forecasts courtesy of:
 

 
AQI: Good (0 - 50) AQI: Good (0 - 50)
Air quality is considered satisfactory, and air pollution poses little or no risk.
AQI: Moderate (51 - 100) AQI: Moderate (51 - 100)
Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.
AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy for Sensitive Groups (101 - 150)
Although general public is not likely to be affected at this AQI range, people with lung disease, older adults and children are at a greater risk from exposure to ozone, whereas persons with heart and lung disease, older adults and children are at greater risk from the presence of particles in the air.
AQI: Unhealthy (151 - 200) AQI: Unhealthy (151 - 200)
Everyone may begin to experience health effects members of sensitive groups may experience more serious health effects.
 AQI:Very Unhealthy (201 - 300) AQI: Very Unhealthy (201 - 300)
Health alert: everyone may experience more serious health effects.
AQI: Hazardous(301 - 500) AQI: Hazardous (301 - 500)
Health warnings of emergency conditions. The entire population is more likely to be affected.
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
 
Data and Forecasts courtesy of:
Current Conditions
Air Quality Index (AQI)
observed at 16:00 EST
70
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
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 35 Good
Particles (PM2.5) 70 Moderate
Air Quality Forecast
Today Tomorrow
Air Quality Index (AQI)
82
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Air Quality Index (AQI)
72
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5)
82
Moderate
Particles (PM2.5)
72
Moderate
Forecast Discussion: It will be a delightful weekend across the Delaware Valley, with mild and mostly sunny weather, courtesy of a broad area of high pressure. Warm air arriving aloft will promote a very strong surface inversion on Saturday morning and limited vertical mixing during the afternoon. These conditions will favor persistent mid-Code Yellow air quality. Sunday’s weather will be similar to Saturday’s with the exception of more clouds in the late afternoon due to a “back door” cold front approaching from the north. Another day of limited vertical mixing will push particles a bit higher in the Moderate range. Monday will also be unseasonably warm, but with mostly cloudy skies ahead of a strong cold front moving in from the west. Sunday’s frontal boundary may stall over the forecast area, which would help to drive particle concentrations even higher. To counter those potential increases, a shift to southerly flow aloft on Monday afternoon will begin to bring clean maritime air into the region. Overall, mid-Moderate air quality is likely to persist. **Extended Forecast: The strong cold front will move through the forecast area on Tuesday. Periods of heavy rain and gusty winds associated with the frontal passage, along with clean onshore transport aloft, will return particles to the Good range. -Huff
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