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
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
Air Quality Forecast
Today's High Tomorrow's High
Air Quality Index (AQI)
65 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Air Quality Index (AQI)
35 
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5)
65 
Moderate
Particles (PM2.5)
35 
Good
Forecast Discussion: Current Conditions as of 1 PM on Friday: Seasonably warm temperatures under mostly sunny skies will see some warmer and slightly more humid air arrive for the weekend. The forecast period will be mostly on the dry side, with the greatest threat for any precipitation occurring late afternoon/evening on Sunday. Moderate air quality this weekend will improve back to levels inside the good range behind a cold front on Sunday. High pressure will keep skies mostly sunny for a good portion of next week. *** Saturday’s Forecast: A light southerly breeze will help to usher in a slightly warmer and more humid air mass on Saturday. PM 2.5 concentrations are expected to climb into the moderate range early with the arrival of warmer air aloft prior to the warmer temperatures arriving at the surface. Some cloud cover and patchy fog early should transition to more of a mix of sun and clouds by the afternoon. Highs should reach the mid to upper 70s. *** Sunday’s Forecast: Warmer and more humid conditions will continue on Sunday before a cold front swings through by late in the day. PM 2.5 concentrations will again remain inside the moderate range, though will begin falling with the arrival of the front. The best chance for precipitation over this forecast period will occur Sunday afternoon to evening as the front approaches. A south southwesterly breeze early in the day will become more west/northwesterly after the front pushes eastward. Highs will be in the upper 70s to low 80s, a bit above normal for the final full day of summer. *** Monday’s Forecast: A cooler and cleaner air mass will move in behind the cold front for Monday. Breezy northwesterly winds will keep the air well mixed, leading to good levels of air quality for the final few hours of summer. Forecast highs for the day will be limited to the upper 60s. High pressure will begin to build from the west and will eventually control our weather for later on in the week. Fall will officially arrive Monday night. *** Extended Outlook: High pressure will be positioned more overhead starting on Tuesday and is expected to remain there for most of the week. Mostly sunny skies with seasonal temperatures will be an almost daily occurrence as a result. PM 2.5 levels will still be inside the good range early on Tuesday, but as the high moves more overhead and winds become calmer a period of more stagnant air will allow for moderate concentrations to return. The week looks to remain fairly dry as well. --- Roble

Current Conditions
Air Quality Index (AQI)
observed at 11:00 EDT
60
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5) 60 Moderate
Ozone 21 Good

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