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 EDT
87
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
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 87 Moderate
Particles (PM2.5) 43 Good
Air Quality Forecast
Today Tomorrow
Air Quality Index (AQI)
85
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
Air Quality Index (AQI)
101
Unhealthy for Sensitive Groups
Health Message: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors.
ACTION DAY
AQI - Pollutant Details
Ozone
85
Moderate
Particles (PM2.5)
38
Good
Ozone
101
Unhealthy for Sensitive Groups
Particles (PM2.5)
42
Good
Forecast Discussion: Thursday is an Air Quality Action day for Code Orange (Unhealthy for Sensitive Groups or USG) ozone! Because May and early June were unusually rainy, this is the latest into the ozone season that the Philadelphia metropolitan area has ever gone without an ozone Action Day. Weather conditions are finally conducive for high ozone, however. As of Wednesday afternoon, ozone is rising quickly across the forecast area and upwind across the Great Lakes and Ohio River Valley. On Thursday, a second consecutive day of hot and sunny weather with light surface winds will allow ozone to reach the USG range at scattered locations. Particles will linger in the upper Good range. **Extended Forecast: Friday will be even hotter and more stagnant, with calm winds for much of the day. Another Air Quality Action day is expected, with more widespread USG conditions. A cold front will approach the forecast area from the north on Saturday afternoon. Depending on the progression of the front, afternoon showers and thunderstorms are possible, which would limit ozone to the Moderate range. A third consecutive ozone Action day is a possibility, however, if the front slows or thunderstorms are localized. -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