Lehigh Valley
 
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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)
66 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Air Quality Index (AQI)
68 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5)
66 
Moderate
Particles (PM2.5)
68 
Moderate
Forecast Discussion: Current Conditions: Mostly cloudy conditions with very light to calm winds prevail across the region this Tuesday afternoon. A cold front moving into western Pennsylvania at present will spark a few showers and a thunderstorm this afternoon into the evening hours. Very little mixing is resulting in fine particulate in the moderate range in all areas, and this will continue to be the case into tonight. Lows tonight in the middle and upper 50s. *** Wednesday's forecast: High pressure will slowly build into the area Wednesday, but the day will start with plenty of cloudiness and perhaps a shower. Once again, winds will be quite light, and this will permit little change to the air quality, which will remain at moderate levels. Afternoon temperatures in the lower to middle 70s with sunshine returning in the afternoon. Patchy cloudiness Wednesday with areas of fog forming. PM2.5 will continue to be in the moderate range. *** Extended forecast: We will remain on the mild side into the day Friday, with increasingly higher humidity and moderate levels of PM. High pressure will provide for sunshine for the most part on Thursday. Increasing winds from the south and southwest on Friday could bring the mercury into the middle 70s. Showers and a thunderstorm are then possible very late Friday into Friday night as a strong cold front approaches from the west. The weather pattern will then take a cooler and more progressive path over the weekend into early next week. With systems moving through with increasing frequency and increasing winds at the surface, mostly good air quality is expected. Highs over the weekend will average mainly in the middle 60s, just slightly below early October averages.---McAuliffe

Current Conditions
Air Quality Index (AQI)
observed at 5:00 EDT
58
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5) 58 Moderate
Ozone 6 Good

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