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)
49 
Good
Health Message: None
Air Quality Index (AQI)
56 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
AQI - Pollutant Details
Ozone
49 
Good
Particles (PM2.5)
45 
Good
Ozone
56 
Moderate
Particles (PM2.5)
49 
Good
Forecast Discussion: Current conditions: At 2 p.m. EDT this Thursday afternoon, skies are partly sunny across the area with weak high pressure in place. Ozone levels remain in the upper good range, and fine particulate will be mixed out this afternoon, ending up in the good range as well. A cold front is currently moving across the eastern Ohio valley, and a thunderstorm can pop in parts of the area this afternoon and evening. Warmer overnight with low temperatures only falling to near 70. *** Friday's forecast: The cold front is expected to pass slowly through Pennsylvania on Friday, weakening as it does so. Winds will shift into the northwest late in the morning, leading to drier air moving in. This will act to keep ozone and fine particulate down in the good range again. High temperatures will reach around 90 degrees. Mostly clear and mild Friday night with lows in the middle 60s. *** Extended forecast: A large area of high pressure with more clouds than sunshine and above normal temperatures will continue into the weekend. Increasingly, ozone buildups will occur, so ozone may go into the moderate range by Saturday. Fine particulate will also be on the rise by late in the weekend, with moderate readings by Sunday. A little cooler air aloft may creep into the state by early next week, and this in conjunction with the hot and humid air at the surface may trigger an afternoon or evening thunderstorm. Ozone formation early next week will be highly dependent on this convection.---McAuliffe

Current Conditions
Air Quality Index (AQI)
observed at 7:00 EDT
26
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 9 Good
Particles (PM2.5) 26 Good

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