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)
35 
Good
Health Message: None
Air Quality Index (AQI)
45 
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5)
35 
Good
Particles (PM2.5)
45 
Good
Forecast Discussion: Current Conditions as of 2 PM on Wednesday: Brisk northwesterly winds continue to filter in an unseasonably cool and dry air mass into the region. PM 2.5 concentrations have fallen well inside the good range and are expected to remain there until at least Friday. Another round of showers Friday evening and cold front overnight will quickly return any moderate air quality to the good range for the weekend. *** Thursday’s Forecast: High pressure will continue to slowly build over the region into the day on Thursday. We should expect mostly sunny skies with a slight rebound in afternoon temperatures from similar hours on Wednesday. Breezy northwesterly flow will continue, keeping the air well mixed and highs just below normal once again. Temperatures should manage to push into the lower 60s by the afternoon hours. With a dry and clean air mass remaining in place, PM 2.5 concentrations will stay inside the good range for the day. *** Extended Forecast: Cloud cover will begin to increase early Friday morning as the area of high pressure departs to our northeast and the next disturbance approaches from the west. The breezy northwesterly wind will turn to more south/southeasterly flow. Moisture levels will increase throughout the day. The best chances for precipitation appear to be from late afternoon and through the evening hours. PM 2.5 concentrations should climb to levels higher than that of both Wednesday and Thursday, but should remain mostly just inside the good range. The longer the flow has a more southeasterly component ahead of the precipitation, the more likely we will see a cleaner maritime air mass blanket the region. Brisk west to northwesterly flow will return during the day on Saturday as the system and associated cold front push eastward. This will return any near moderate to moderate concentrations back inside the good range for the remainder of the weekend. --- Roble

Current Conditions
Air Quality Index (AQI)
observed at 5:00 EDT
31
Good
Health Message: None
AQI - Pollutant Details
Ozone 31 Good
Particles (PM2.5) 17 Good

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