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
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)
50 
Good
Health Message: None
Air Quality Index (AQI)
60 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5)
50 
Good
Particles (PM2.5)
60 
Moderate
Forecast Discussion: Current Conditions as of 2 PM on Friday: A change in the pattern is coming, after one last significantly cold day on Friday. We will see the flow turn to more zonal through the weekend and into next week, bringing near normal temperatures to the region that is long overdue. Unfortunately, a period of at least moderate air quality will arrive with the milder temperatures. *** Saturday’s Forecast: Temperatures will climb above the freezing mark on Saturday to help those that are still trying to dig out from the winter weather from the past few days. High pressure situated to our south will turn the flow to more south/southwesterly to help begin ushering the warmer air northward. A disturbance crossing the Great Lakes will produce some clouds by the afternoon to evening after a mostly sunny start to the day. With the southerly breeze and low level moisture associated with some snow melt, PM-2.5 concentrations are expected to climb into the moderate range. *** Sunday’s Forecast: The trend of warming temperatures will continue on Sunday, despite mostly cloudy skies. Highs for the day should manage to peak in the low to mid 40s. The southerly flow will turn a little more westerly, but PM-2.5 concentrations will remain inside the moderate range despite breezy conditions. *** Monday’s Forecast: With the change in pattern, we see a flatter west to east type of flow that results in storm systems developing less frequently as we had much of the second half of winter. With this type of flow, drier conditions will continue again on Monday. Temperatures should yet again climb slightly higher than the previous day with highs in the mid 40s under mostly sunny skies. Unfortunately, in a less active pattern such as this, we tend to see more prolonged periods with less than ideal air quality conditions. This will be the concern as we head into the new work week, which PM-2.5 concentrations will continue to be on the rise and once again remain well inside the moderate range. *** Extended Outlook: With conditions looking to remain rather dry through at least the middle of the week, we will see warmer air continue to push northward on Tuesday. A combination of light winds and increasing moisture may push PM-2.5 levels to the high end of the moderate range, something we will need to watch over the next few days. Temperatures will be near seasonable levels through the remainder of the week. Our next best chance for precipitation may not arrive until next weekend. PM-2.5 concentrations are expected to stay in at least the moderate range over this period. --- Roble

Current Conditions
Air Quality Index (AQI)
observed at 18:00 EST
58
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5) 58 Moderate
Ozone 25 Good

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