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 Tomorrow
Air Quality Index (AQI)
47 
Good
Health Message: None
Air Quality Index (AQI)
79 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
AQI - Pollutant Details
Ozone
47 
Good
Particles (PM2.5)
46 
Good
Ozone
79 
Moderate
Particles (PM2.5)
52 
Moderate
Forecast Discussion: Current conditions: At 2 p.m. EDT this Tuesday afternoon, an upper level trough of low pressure continues to bring cooler than normal air into the area on a northwesterly flow. There are also showers and thundershowers breaking out to the north. The clean air mass has resulted in ozone and fine particulate remaining on the low side. As warmer and more humid air moves in later on this week, both of these pollutants' concentrations will increase. For tonight, we will have a mostly clear sky with a cool night in the middle 50s. *** Wednesday's forecast: High pressure will build overhead for Wednesday, allowing for a mostly sunny sky with a nice afternoon. High temperatures will max out around 80 degrees, with ozone levels increasing some, but most locations will remain in the upper good range. Fine particulate will remain good in all areas. *** Extended forecast: Warmer and more humid air will make a comeback on a southwesterly flow later this week, with a slow moving cold front slated to affect us by Saturday with increasing chances for thunder. Ozone levels on Thursday will rise well into the moderate range, and fine particulate will also rise to low moderate, owing to increasing air recirculation. Similar conditions will be had on Friday with limited afternoon convection leading to moderate air quality. There is a better chance for thunderstorms Saturday with a slow moving cold front coming into Pennsylvania, with ozone formation being more limited. PM2.5 levels will stay mostly in the moderate range.---McAuliffe

Current Conditions
Air Quality Index (AQI)
observed at 13:00 EDT
43
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 43 Good
Particles (PM2.5) 40 Good

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