Lehigh Valley
 
Data and Forecasts courtesy of:
 

 
AQI: Good (0 - 50) AQI: Good (0 - 50)
Air quality is considered satisfactory, and air pollution poses little or no risk.
AQI: Moderate (51 - 100) AQI: Moderate (51 - 100)
Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.
AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy for Sensitive Groups (101 - 150)
Although general public is not likely to be affected at this AQI range, people with lung disease, older adults and children are at a greater risk from exposure to ozone, whereas persons with heart and lung disease, older adults and children are at greater risk from the presence of particles in the air.
AQI: Unhealthy (151 - 200) AQI: Unhealthy (151 - 200)
Everyone may begin to experience health effects members of sensitive groups may experience more serious health effects.
 AQI:Very Unhealthy (201 - 300) AQI: Very Unhealthy (201 - 300)
Health alert: everyone may experience more serious health effects.
AQI: Hazardous(301 - 500) AQI: Hazardous (301 - 500)
Health warnings of emergency conditions. The entire population is more likely to be affected.
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
 
Data and Forecasts courtesy of:
Air Quality Forecast
Today's High Tomorrow's High
Air Quality Index (AQI)
66 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Air Quality Index (AQI)
50 
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5)
66 
Moderate
Particles (PM2.5)
50 
Good
Forecast Discussion: Current conditions: At 2 p.m. EST this Thursday afternoon, sunshine and a light southwesterly flow are causing temperatures to soar to record levels. Weak flow and limited mixing have caused fine particulate to move well into the moderate range this afternoon, and with mixing remaining light into the day Friday, moderate levels of this pollutant will continue for another day. Tonight will continue rather mild with some clouds and a shower or thundershower in response to a weak front to the north. Lows will only drop to the lower 50s. *** Friday's forecast: Unseasonably warm with temperatures climbing to near 70, which will fall short of the record high for Friday for Allentown of 76 set in 1985. A light south to southwest flow will retain moderate air quality. Another very mild night Friday night with a shower late. *** Extended forecast: A strong cold front will move through the state on Saturday with a gusty thunderstorm possible as it passes. Stronger winds associated with the front will knock particulate matter back into the good range. Much colder air will move back into the area with temperatures more typical of late February Saturday night into Sunday with gusty northwest winds. Temperatures on Sunday only in the middle 40s with good air quality. The next weather system will arrive later on Monday with the possibility of snow mixing with and turning to rain. Unsettled weather continues into the midweek period as another low lifts out of the central U.S. Temperatures will average above normal levels to close out February.---McAuliffe

Current Conditions
Air Quality Index (AQI)
observed at 14:00 EST
50
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
Ozone 45 Good
Particles (PM2.5) 50 Good

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