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
ACHD website | Air Quality Action Day Program | Forecast | PADEP website
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: None
AQI - Pollutant Details
Particles (PM2.5)
Particles (PM2.5)
Forecast Discussion: Current conditions: Our weather continues to be rather pleasant this Thursday afternoon, but major changes are on the way by the weekend. An area of low pressure coming out of the Tennessee valley will spread rain and a thunderstorm or two across the area tonight into Friday morning. Rain will be heavy at times, and a flood watch is also in effect until early Friday afternoon. Air quality is in the upper good range this afternoon, and the heavier rainfall tonight will put concentrations further down into the good range. *** Friday's forecast: Rain will fall, heavy at times into Friday afternoon. Turning colder during the day as well with temperatures falling close to 50 by late in the day. Rather cloudy, windy and cold Friday night with a couple of leftover showers as the mercury falls to near 40 degrees. Rain showers might even mix with wet snow showers or snow pellets at elevations above 2,000 feet. *** Extended forecast: Windy and chilly conditions will continue on Saturday with clouds and only a little sun. Temperatures may not leave the upper 40s, but PM2.5 concentrations will be low. Wind chills Saturday may be in the middle 30s with wind gusts past 25 mph. Slightly better on Sunday with a little more in the way of sunshine, and temperatures will recover to the upper 50s. Another cold front will pass through the area mainly dry Sunday night, reinforcing the chill across the area with a renewed northwesterly flow early next week. PM2.5 values will remain on the low side as the strong mixing continues.---McAuliffe

Current Conditions
Air Quality Index (AQI)
observed at 20:00 EDT
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 36 Good
Particles (PM2.5) 54 Moderate

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