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's High Tomorrow's High
Air Quality Index (AQI)
27 
Good
Health Message: None
Air Quality Index (AQI)
42 
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5)
27 
Good
Particles (PM2.5)
42 
Good
Forecast Discussion: A stretch of unseasonably mild, summerlike weather will begin on Thursday and extend into the beginning of next week. The flow will turn southerly, bringing warm and humid air into the Mid-Atlantic region. Thursday will be mostly sunny with increasing humidity. Particles will rise in response to calm winds in the morning, but onshore (southeasterly) afternoon winds will pick up and provide enough ventilation to limit daily average particle concentrations to the Good range. **Extended Forecast: A weak cold front will approach the Delaware Valley on Friday morning. This front will not progress very far before lifting back northward. The nearby location of the weak front will limit atmospheric mixing and allow particles to reach the low Moderate range. Saturday will be very warm and humid. Stronger winds, especially in the afternoon, will push particles back into the upper Good range. -Huff

Current Conditions
Air Quality Index (AQI)
observed at 23:00 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 21 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