Lehigh Valley
 
Data courtesy of:
 

 
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
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)
60 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Air Quality Index (AQI)
69 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
AQI - Pollutant Details
Particles (PM2.5)
60 
Moderate
Ozone
50 
Good
Ozone
69 
Moderate
Particles (PM2.5)
64 
Moderate
Forecast Discussion: Current Conditions: A weak cool front is crossing central Pennsylvania this Thursday afternoon. A couple of thunderstorms might still develop across eastern parts of the partnership area into this evening. Moderately humid conditions are bringing fine particulate levels into the moderate range, while there is also enough sunshine and warm air to put ozone concentrations just past the moderate threshold in spots. Partly cloudy early tonight, then more low clouds may move in later on. Mild with lows only dropping to near 60, and fine particulate levels will continue to be in the moderate zone. *** Friday's forecast: Sunshine and a few clouds on Friday. Continued warm and humid with the chance for afternoon and evening thunderstorms. This formation of convection will limit ozone formation to the moderate range, and because humidity will remain high, PM2.5 levels will stay in the moderate range as well. Partly cloudy Friday night with a stray shower. *** Extended forecast: A stronger cool front will put an end to our well above normal temperatures over the weekend. Showers and a thunderstorm developing late Saturday into Saturday evening should prevent ozone from rising above the lower moderate range. Light winds and high surface moisture levels will keep PM2.5 in the mid-moderate range. Saturday will be the last day in the 80s for awhile as east to northeast winds will prevail Sunday and Monday on the northern side of the front as this front stalls out across the Mid-Atlantic region. This will mean plenty of clouds, cooler temperatures, and a lingering rain possibility. Ozone and fine particulate matter will be knocked back down into the good range as we move into the month of June. ---McAuliffe

Current Conditions
Air Quality Index (AQI)
observed at 19:00 EDT
52
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5) 52 Moderate
Ozone 39 Good

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