Data 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
Air Quality Forecast
Today's High Tomorrow's High
Air Quality Index (AQI)
Health Message: None
Air Quality Index (AQI)
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5)
Particles (PM2.5)
Forecast Discussion: After the autumnal chill of the past week, a hint of late summer will return across the Delaware Valley this weekend. A surge of warm air arriving on southwesterly winds on Saturday will allow temperatures and humidity to quickly rebound. Although afternoon surface winds will provide some atmospheric ventilation, limited vertical mixing and a strong morning inversion will push daily average particle concentrations into the Moderate range. Sunday will be even warmer than Saturday, with lighter surface winds ahead of a cool front arriving from the north in the early evening. The front will bring rain showers to the forecast area late Sunday afternoon. Another day of limited vertical mixing will keep particles in the Moderate range. Monday will be mostly sunny and cooler in the wake of the frontal passage, allowing particles to drop back down into the Good range. **Extended Forecast: Temperatures and humidity will rise back up on Tuesday ahead of another cold front arriving in the late evening. Particles will increase, but sustained southerly winds will keep daily average particle concentrations in the upper Good range. -Huff

Current Conditions
Air Quality Index (AQI)
observed at 15:00 EDT
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 32 Good
Particles (PM2.5) 16 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