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)
46 
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
Ozone
46 
Good
Particles (PM2.5)
40 
Good
Particles (PM2.5)
60 
Moderate
Ozone
50 
Good
Forecast Discussion: Current Conditions as of 1 PM on Friday: High pressure continues to shift eastward this afternoon, creating sunny and dry conditions. Temperatures are still sitting a few degrees below normal after a number of locations across the state either tied or broke record lows this morning. Warmer and more humid conditions, but also wet, will return for the weekend before we jump right back to unseasonably cool temperatures by the middle of next week. *** Saturday’s Forecast: High pressure will continue to shift east on Saturday, turning the flow back to more south/southwesterly. Warmer and more humid air will return as a result of the southerly flow. Temperatures will return to near normal values, low to mid 80s, with dew point temperatures climbing back into the 60s. PM 2.5 concentrations will climb back into the moderate range with the southerly breeze and increasing moisture. A mix of sun and clouds early will become increasingly cloudy by late afternoon. This increase in cloud cover should limit peak ozone concentrations to the higher end of the good range. There is a chance for some scattered showers by late Saturday afternoon, but an even greater chance for wet conditions on Sunday. *** Sunday’s Forecast: Mostly cloudy conditions with showers and thunderstorms likely will limit ozone levels to the good range yet again. PM 2.5 concentrations will at least begin the day in the moderate range with some locations possibly seeing levels fall back into the good range late in the day. Temperatures will approach the low to mid 80s, but the cloud cover and precipitation will limit just how high those values climb. This may also limit the level of instability to keep the chance for severe storms more scattered across the state. *** Monday’s Forecast: More showers with a few thunderstorms are expected on Monday before a cold front returns the cooler and drier conditions to the region for most of the remainder of the week. The flow will become more westerly and breezy with dew point temperatures beginning to fall by the afternoon. Some lingering moderate PM 2.5 concentrations early will fall back into the good range by the afternoon. The slower the arrival of the cold front, the more likely we will see at least a few moderate readings for the day. Highs will be limited to near 80 degrees. *** Extended Outlook: High pressure will begin to return on Tuesday as the unseasonably cooler and drier weather returns to the region. Daily highs will be limited to the upper 70s to near 80 degrees. Good air quality is expected for at least Tuesday and the first half of Wednesday. Low moderate conditions could return Thursday-Friday with PM 2.5 concentrations more likely to reach moderate status than ozone at this time. --- Roble

Current Conditions
Air Quality Index (AQI)
observed at 20:00 EDT
40
Good
Health Message: None
AQI - Pollutant Details
Ozone 40 Good
Particles (PM2.5) 39 Good

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