Lehigh Valley
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
Air Quality Action Day Program | Current Air Quality Index | Forecast
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: At 2 p.m. EDT this Tuesday afternoon, high pressure building in from the west is sending a chilly northwesterly flow across the area under partly sunny skies. Enough mixing exists to keep air quality good. Tonight, skies will clear and winds will drop off, leading to the end of the growing season for most locations as low temperatures fall to the upper 20s in the colder spots. *** Wednesday's forecast: Sunny skies will start the day on Wednesday, then cloudiness will creep back in during the afternoon. Winds will also shift into the south and southeast, with the onshore flow maintaining low levels of fine particulate. Afternoon temperatures will only recover into the lower 50s. Mostly cloudy and chilly Wednesday night with rain arriving towards dawn. *** Extended forecast: Overcast, damp and chilly on Thursday with rain at times. Brisk south winds and rainfall will keep PM2.5 concentrations low. Clouds will yield to sunshine on Friday with temperatures close to 60 degrees along with good air quality. Milder on Saturday with times of clouds and sunshine, with temperatures reaching into the middle 60s. The next cold front comes through with a shower early Sunday, otherwise dry for the day With seasonably cool temperatures. Fine particulate levels will remain in the good range through the weekend. ---McAuliffe

Current Conditions
Air Quality Index (AQI)
observed at 7:00 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 28 Good
Particles (PM2.5) 52 Moderate

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