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:
Air Quality Forecast
Today Tomorrow
Air Quality Index (AQI)
33 
Good
Health Message: None
Air Quality Index (AQI)
44 
Good
Health Message: None
AQI - Pollutant Details
Ozone
33 
Good
Particles (PM2.5)
25 
Good
Ozone
44 
Good
Particles (PM2.5)
29 
Good
Forecast Discussion: An unseasonably cool air mass will move into the region on Saturday following the conclusion of Friday night’s heavy rainfall. Scattered showers will linger across Southeast Pennsylvania throughout Saturday morning and early afternoon hours before giving way to partly sunny skies in the late afternoon. A combination of unsettled conditions for the first half of the day and gusty surface winds will keep ozone and particles in the lower end of the Good range on Saturday. Sunday will be a pleasant day across the Delaware Valley as humidity remains relatively low and temperatures return to near normal values. Clean northeasterly flow aloft will keep ozone and particles well inside the Good range. High pressure centered over the Midwest will build eastward towards the Mid-Atlantic on Monday, promoting mostly sunny skies and diminishing winds. Ozone will rebound into the Moderate range, while particles linger in the Good range in response to relatively low humidity. **Extended Forecast: The effects of nearby high pressure will be evident on Tuesday as temperatures rise into the mid-to-upper 80s °F under mostly sunny skies. A few clouds in the afternoon hours could give way to an isolated shower but most of the region will remain dry. Light surface winds and stagnating flow aloft will be favorable for ozone formation, allowing ozone to rise higher in the Moderate range. Particle concentrations will increase as well but remain just inside the Good range. -Enlow/Huff

Current Conditions
Air Quality Index (AQI)
observed at 7:00 EDT
40
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 19 Good
Particles (PM2.5) 40 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