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 Wednesday afternoon, low pressure moving across the Midwest is spreading rain eastward into the Great Lakes and Ohio valley. High pressure is now moving off the east coast and resulting in winds shifting into the south and southeast. This onshore flow coupled with very dry air near the surface has resulted in low concentrations of fine particulate. Mostly cloudy for tonight with a cold rain coming in later on. At higher elevations across the Poconos, wet snow or sleet will fall. Low temperatures in the middle to upper 30s. *** Thursday's forecast: An area of low pressure will move across Pennsylvania for the day Thursday, resulting in periods of rain across all areas. Brisk south to southeast winds along with the rain will bring good air quality. Afternoon temperatures only rising to around 50 degrees. Rain will end Thursday night, with lows in the middle 40s. *** Extended forecast: Breezy with some sunshine returning by Friday, with PM2.5 in the good range and temperatures near normal. The next cold front will move through sometime Saturday evening, with southwesterly winds bringing in milder air. Strong mixing will keep fine particulate in the good range as temperatures move well into the 60s. Mostly cloudy behind the front on Sunday with a shower or two possible. High pressure building in early next week will mean a warming trend with above normal temperatures to close out the month. There might even be a return to moderate air quality by Tuesday with light winds and little mixing.---McAuliffe

Current Conditions
Air Quality Index (AQI)
observed at 4:00 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 24 Good
Particles (PM2.5) 64 Moderate

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