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 17:00 EST
61
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 29 Good
Particles (PM2.5) 61 Moderate
Air Quality Forecast
Today Tomorrow
Air Quality Index (AQI)
57
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Air Quality Index (AQI)
57
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5)
57
Moderate
Particles (PM2.5)
57
Moderate
Forecast Discussion: The Philadelphia metropolitan area will experience record-breaking warmth on Wednesday. It will feel more like May than February! Areas of fog developing Tuesday evening will linger into Wednesday morning, aiding in particle formation. Although the transport pattern aloft is clean, very limited vertical mixing on Wednesday will inhibit mixing of this cleaner air to the surface. Slightly breezier surface winds in the afternoon will provide some ventilation, but not enough to prevent another day of Moderate particle conditions. **Extended Forecast: A weak cold front will move through the forecast area early Thursday morning. An air mass change behind the front, enhanced by light onshore flow, should return particles to the Good range for Thursday and Friday. -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