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)
55 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Air Quality Index (AQI)
40 
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5)
55 
Moderate
Particles (PM2.5)
40 
Good
Forecast Discussion: Current Conditions: As of 2 PM on Wednesday, mostly sunny skies persist over the region as an area of high pressure continues to move east into the northern Mid-Atlantic. This high pressure system is not only keeping our skies clear but has also allowed the winds to remain out of the northwest today. Right now, temperatures are hovering in the low 30s while dewpoints have struggled to make their way through the single digits. It is the combination of the cold and dry conditions that are holding PM 2.5 levels primarily in the good range. As warmer and more humid air moves into the region tomorrow, expect PM 2.5 levels to creep up into the low moderate range in isolated areas. *** Thursday's Forecast: So for Thursday, expect the skies to turn mostly cloudy as a storm system, originating from southcentral Canada, drives southward across the Great Lakes / Ohio Valley region toward western PA. As a result, light rain / snow will develop over the western portion of the Commonwealth during the day. Later in the day, the precipitation from this system will approach our area. Over our area, high temperatures will be in the low 30s. The combination of the seasonable temperatures, the increase in moisture (due to the approaching system, and light wind flow during the morning hours will help drive PM 2.5 levels into the low moderate range in some areas. *** Extended Outlook: Over the coming days, expect temperatures to fluctuate between near to below normal levels as a series of systems impact our area. Here is how things are shaping up... On Friday, expect colder and drier air to build in as an area of high pressure builds in over the Midwestern US. This high will gradually shift east during the weekend. As it does, expect temperatures to warm closer to normal levels. At the same time, a new disturbance, with origins over the southwestern US, will make its way into the Plains and then eastward into the Ohio Valley. Late Sunday and Monday, this system will begin to impact PA. Expect it to be cold enough to support snow as the system moves east across the northern Mid-Atlantic. An area of high pressure will be quick to fill the storm's void across oura rea on Tuesday as it dives in from the west and over the Mid-Atlantic. A new storm system making its way north and east from the Gulf of Mexico could impact our area during the middle of the week. Overall, due to the nature of the activity expected over the next week, expect PM 2.5 levels to primarily stay within the good range, with levels possibly approaching the moderate range late in the weekend as the new storm system approaches the region. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 4:00 EST
58
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5) 58 Moderate
Ozone 12 Good

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