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 2:00 EDT
56
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 32 Good
Particles (PM10) 22 Good
Particles (PM2.5) 56 Moderate
Air Quality Forecast
Today Tomorrow
Air Quality Index (AQI)
70
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
Air Quality Index (AQI)
66
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
AQI - Pollutant Details
Ozone
70
Moderate
Particles (PM2.5)
51
Moderate
Ozone
66
Moderate
Particles (PM2.5)
52
Moderate
Forecast Discussion: Current conditions: High pressure moving to the south this Friday afternoon has brought a more southwesterly flow to the Delaware valley, and this will bring warmer air into the region over the weekend with air quality deteriorating to the moderate range in parts of the area. Tonight will be comfortably cool under a clear sky as temperatures fall back to near 60 degrees. *** Saturday's forecast: Sunshine for the most part Saturday with a warm afternoon. A morning inversion along with the warmer air influx will send PM2.5 and ozone to moderate levels as temperatures move into the lower and middle 80s. *** Sunday's forecast: Moderate air quality will continue with summer like weather on the last official day of the summer (Fall arrives at 3:50 a.m. EDT Monday morning). With sunshine and a few clouds, temperatures will move well up into the 80s in the afternoon. *** Monday's forecast: Ozone and fine particulate will still average in the upper good to lower moderate range Monday as any showers or thunderstorms will not reach the area until the late afternoon/early evening hours. *** Extended forecast: Cooler and more seasonable air will return Tuesday into Wednesday as a new area of high pressure builds in on a clean air mass.---McAuliffe
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