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: Unusually sensitive people should consider reducing prolonged or heavy exertion.
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AQI - Pollutant Details
Particles (PM2.5)
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Forecast Discussion: Current Conditions: As of 2 p.m. EDT, high pressure across the Northeastern U.S. is producing another gorgeous late summer day with a good deal of sunshine. With winds lightening up some over Thursday, ozone and fine particulate concentrations have increased slightly. However, these parameters remain in the good range. Temperatures and humidity levels are expected to increase over the Labor Day weekend, so some deteriorations in air quality are likely. Mostly clear and a little milder tonight with temperatures in the middle 50s. *** Saturday's forecast: Periods of clouds and sunshine Saturday with high pressure moving off of the east coast. This will turn the winds into a more southerly direction, and afternoon temperatures will reach into the lower 80s. Ozone levels should be on the rise, perhaps moving close to the moderate range in spots, and fine particulate will also increase into moderate territory. Clear to partly cloudy and more humid Saturday night with lows in the middle to upper 60s. *** Sunday's forecast: More humid with periods of clouds and sunshine for Sunday. The chances for showers and afternoon thunderstorms will increase. Ozone may average in the lower to middle moderate range in areas where thunderstorms hold off, and fine particulate will remain in the middle moderate range. The mercury will rise into the middle 80s with light southwest winds. *** Labor Day forecast: Remaining warm and humid for Labor Day with intervals of sunshine and clouds. Parts of the area might still see a thunderstorm, but most of the time should be rain free. Temperatures again in the middle to upper 80s, with air quality again in the lower moderate range. *** Extended forecast: A cold front will approach the area late Tuesday into Tuesday night with a good chance for afternoon and evening thunderstorms. Ozone levels should drop back into the good range, but PM will stay on the moderate side. High pressure will build back into the region Wednesday into Thursday with slightly lower temperatures and improved air quality.---McAuliffe

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