Lehigh Valley
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
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
Data and Forecasts courtesy of:
Current Conditions
Data Not Available
Air Quality Forecast
Today Tomorrow
Air Quality Index (AQI)
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
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: Current conditions: At 2 p.m. EST this Wednesday afternoon, a large area of high pressure was building in from the Midwest. The pressure gradient between this high and low pressure moving off of the New England coast has resulted in northwesterly winds increasing, and pulling fine particulate concentrations down into the good range. Tonight will bring a mostly clear sky with temperatures falling back to the middle 20s. *** Thanksgiving Day forecast: Sunshine will prevail a good part of Thanksgiving Day, but with high clouds showing up during the afternoon. Things will be on the chilly side with highs reaching the middle 40s. Enough mixing and dry air should exist to where fine particulate remains in the good range. *** Friday's forecast: A nice day is on tap for Friday, with a mostly sunny sky. Winds will lighten and shift into the southwest, perhaps bringing PM2.5 levels back into the moderate range. Highs will recover into the lower 50s. *** Saturday's forecast: Periods of clouds and sunshine and still on the mild side Saturday. A cold front will approach the area, but will not move through until Saturday night. Light southwest winds will bring another day of low moderate fine particulate concentrations. The cold front passes through Saturday night, but with nothing more than a rain shower. *** Sunday's forecast: Breezy and chilly Sunday with clouds yielding to afternoon sunshine. Highs will be limited to the middle 40s, with fine particulate levels back down inside the good range. *** Monday's forecast: High pressure will build in for Monday, and result in another mostly sunny day with a milder afternoon. The dryness of the air should limit fine particulate to the upper good range. *** Extended forecast: Our dry weather pattern will continue as we move into the midweek period. Another cold front coming through Tuesday night or Wednesday looks to be a mostly dry one, so once again not much precipitation is expected with it. On the mild side Tuesday into Wednesday, then another shot of chillier air comes in late in the week. Overall, temperatures in the long range should average close to normal levels for late November. Fine particulate will be mostly in the good range Tuesday through Thursday.---McAuliffe
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