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
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)
46 
Good
Health Message: None
Air Quality Index (AQI)
25 
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5)
46 
Good
Particles (PM2.5)
25 
Good
Forecast Discussion: Current Conditions: At 2 p.m. EST this Thursday afternoon, brisk and cold northwesterly winds continued unrelentingly across the region on the eastern end of a high pressure system building in from the Midwest. Temperatures this afternoon are struggling in the middle 20s, and strong mixing has maintained low levels of PM2.5. Temperatures will continue to be below normal over most of the next several days, with the coldest air of the winter on tap for this weekend. For tonight, expect clearing skies and diminishing winds. Low temperatures will drop into the single digits in the coldest spots. While PM2.5 will rise overnight, concentrations will remain in the good range. *** Friday's forecast: High pressure will bring times of clouds and sunshine for the day Friday with temperatures recovering to the upper 20s. Lighter winds will mean higher levels of fine particulate than Thursday, but overall averages will be in the upper good range. An arctic cold front then charges southeastward Friday night, and snow showers can also accompany this as the mercury nosedives into the middle teens. *** Extended forecast: The coldest air of the winter will be felt over the weekend with temperatures over 20 degrees below normal. Any sunshine we do get on Saturday will be ineffective as temperatures do not leave the teens and wind chills go below zero with north winds gusting over 30 mph. Obviously, strong mixing will bring fine particulate down to very low levels. Air temperatures may go below zero Saturday night in some areas with lighter winds and snow cover. High pressure will bring more in the way of sun for Sunday. Things will still be rather cold, but there will be less wind. Air quality will average in the upper good range. Clouds and a little sunshine on Monday, and a snow shower or two cannot be ruled out. With winds lightening, fine particulate values may increase to low moderate. The next storm system then bears down on us late Monday night into Tuesday. At present, the storm should take a track very close to us, which if this occurs, could bring in enough warm air aloft to turn precipitation to sleet or freezing rain early Tuesday after starting as snow Monday night. Enough warm air coming in at all levels could even turn precipitation to all rain at some point later Tuesday. Of course, exact precipitation types and amounts highly depend on the track this storm will take, so stay tuned for further updates.---McAuliffe

Current Conditions
Air Quality Index (AQI)
observed at 6:00 EST
38
Good
Health Message: None
Note: Values above 500 are considered Beyond the AQI. Follow recommendations for the Hazardous category. Additional information on reducing exposure to extremely high levels of particle pollution is available here.
AQI - Pollutant Details
Particles (PM2.5) 38 Good
Ozone 15 Good

Past Air Quality Maps and Data
Yesterday's Maps and Data
Air Quality Maps Archives (by region)

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