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)
37 
Good
Health Message: None
Air Quality Index (AQI)
44 
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5)
37 
Good
Particles (PM2.5)
44 
Good
Forecast Discussion: Current Conditions: As of 2 PM on Tuesday, partly sunny skies prevail over the region as a nor'easter continues to pummel much of coastal New England with snow. This strong storm system continues its cyclonic (counter-clockwise) flow across much of the Northeastern US (which is why the clouds continue to roll in from the north, northeast). Right now, temperatures struggle to make their way out of the low 30s. The combination of the cold and dry conditions coupled with the strong winds are keeping PM 2.5 levels within the good category. Expect levels to increase slightly tomorrow as higher pressure begins to build in. *** Wednesday's Forecast: So for Wednesday, expect the skies to turn mostly sunny as the strong coastal system, which impacted much of New England on Tuesday, pulls out to sea. At the same time, a new area of high pressure will build in across the Ohio Valley and extend into western PA. This high, which was hovering over the Midwestern US on Tuesday, will keep the winds out of the west, northwest during the day. High temperatures should peak in the upper 20s. Air quality levels should also go up (as there is less mixing within the boundary layer). The cold and dry air mass early in the day should be the driving factor though, keeping PM 2.5 levels confined to the good category. *** Extended Outlook: Over the next several days, expect temperatures to fluctuate between near and well below normal as a series of cold waves push southward across our region. Needless to say, the overall pattern will remain active. Here is how things are shaping up... During the second half of the week, expect a surge of warmer air to invade the region on Thursday as we transition between a departing high and incoming clipper system. The main low pressure system associated with this clipper system is likely to triggers some rain / snow showers across the region before it presses east of the region on Friday. On the backside of the clipper, colder and drier air will filter southward into the region. Afternoon highs are likely to only peak in the 20s during this time as higher pressure moves in. A new storm system, with origins over the southwestern US, will track northeastward toward our area late Sunday into Monday. As it pushes in, expect snow to fall across the region. Once the storm pushes through, a reinforcing shot of colder and drier air will build in. Overall, due to the constant changing air masses over the area, expect PM 2.5 levels to not rise higher than the good / moderate threshold. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 19:00 EST
32
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5) 32 Good
Ozone 26 Good

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