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 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)
55 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
Air Quality Index (AQI)
83 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
AQI - Pollutant Details
Ozone
55 
Moderate
Particles (PM2.5)
46 
Good
Ozone
83 
Moderate
Particles (PM2.5)
50 
Good
Forecast Discussion: Current conditions: At 2 p.m. EDT this Monday afternoon, heat and humidity continue out ahead of a cold front now moving into northwestern Pennsylvania. With the oppressive humidity, fine particulate is in the middle moderate range, and the sun is producing ozone at levels approaching code ORANGE. The high ozone levels will be tempered later on this afternoon by thunderstorm activity developing across central and western parts of the state, which will move eastward over the next several hours. Warm and muggy later on overnight with temperatures only falling into the lower to middle 70s. *** Tuesday's forecast: Drier air will move in behind a cold front on northwesterly winds on Tuesday, with the front stalling out near the Mason and Dixon line. The drier air will act to mix out fine particulate down into the good range, while ozone production will remain high enough to keep concentrations in the lower moderate range. Afternoon temperatures in the lower to middle 90s. *** Extended forecast: High pressure will continue to bring a dry day for Wednesday, and with lighter winds, ozone production will ramp up further into the moderate range. Fine particulate will remain at the top end of the good range. Our weather may turn more unsettled by later on in the week as the stalled front to our south comes back north and triggers an increase in shower and thunderstorm activity later Thursday into Friday. Ozone and fine particulate will both be moderate on Thursday, then by Friday, there will be enough cloud cover to hold ozone down to the upper good range. Fine particulate will remain moderate.---McAuliffe

Current Conditions
Air Quality Index (AQI)
observed at 5:00 EDT
13
Good
Health Message: None
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 13 Good

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