Lehigh Valley
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AQI: Good (0 - 50) AQI: Moderate (51 - 100) AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy (151 - 200) AQI: Very Unhealthy (201 - 300) AQI: Hazardous(301 - 500) 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

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Air Quality Forecast
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Air Quality Index (AQI)
Health Message: None
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AQI - Pollutant Details
Particles (PM2.5)
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Forecast Discussion: Current Conditions: A couple of thunderstorms are developing in humid air across the region this Friday afternoon. East to southeast winds will keep plenty of moisture in the region over the weekend, and result in plenty of clouds and mainly afternoon and evening shower and thunderstorm activity. Partly to mostly cloudy tonight with a shower or thunderstorm early, then perhaps a shower later on. PM will average in the moderate range overnight. *** Saturday's forecast: A frontal boundary will creep northward to a position just to the south of the region on Saturday. Considerable cloudiness will limit ozone formation to the good range, and fine particulate will be in the upper good range as well. High temperatures will not get out of the 70s Saturday with the abundance of clouds and showers. *** Sunday's forecast: A stationary front will remain just south and east of the area on Sunday, and there will still be enough instability to trigger showers and a thunderstorm. A little warmer Sunday with temperatures in the lower 80s with clouds again keeping ozone down into the good range. Fine particulate will remain in the lower moderate zone. *** Monday's forecast: Periods of clouds and sunshine on Monday with only isolated afternoon and evening thunderstorms as high pressure attempts to rebuild. Light winds and high humidity will again send fine particulate into the moderate range, with ozone expected to average in the upper good to lower moderate range. Temperatures should return to near normal values for early August. *** Extended forecast: Warm and humid conditions will continue into the day Tuesday with periods of clouds and sunshine. A cold front is expected to pass late Tuesday night into early Wednesday. Moderate air quality will continue for most areas into the day Tuesday under southwest winds, with perhaps levels of both ozone and PM well into the moderate range. A northerly flow behind a cold front may then result in mainly good air quality for the middle of next week with a new area of high pressure coming southeastward from the Great Lakes. There are no prolonged ozone events or heat waves foreseen for the near future.--McAuliffe

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Berks County, PA
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