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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
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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
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Pennsylvania DEP - Bureau of Air Quality (BAQ)
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Southwest PA Air Quality Partnership

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Air Quality Forecast
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Air Quality Index (AQI)
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AQI - Pollutant Details
Particles (PM2.5)
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Forecast Discussion: Current Conditions: As of 2 p.m. EDT, low pressure off the coast of New Jersey is bringing a brisk north to northwest flow to the region. This is resulting in good air quality for us. With the north winds as well as plenty of cloudiness, temperatures in many locations are struggling to get to the 50 degree mark. Over the next 24 hours, high pressure will continue to build in from the Ohio valley, with more in the way of sunshine but still a brisk northwest flow. For the night tonight, expect a partly to mostly cloudy sky as temperatures bottom out near 40 in spots. *** Thursday's forecast: Clouds and some sunshine will prevail on Thursday with high pressure building in from the west. Winds will continue brisk from the northwest, and this will keep fine particulate on the low side. Afternoon temperatures reaching into the middle 50s. Partly cloudy Thursday night, and on the chilly side with lows in the upper 30s. *** Extended forecast: Cloudy to partly sunny for the day Friday with high pressure and lighter winds. PM will be on the increase Friday, but should remain in the good range. Temperatures will max out near the 60 degree mark. A weak frontal system will then move across the area sometime on Saturday, but is not expected to produce any rainfall. Following this, high pressure will rebuild Saturday night into Sunday with brisk northwesterly winds once more. Good air quality will be the rule over the weekend. Winds will then turn into the southwest early next week with some warming, and with this, fine particulate will be on the rise, perhaps briefly into moderate territory. Another cold front will bring the chance for a shower on Tuesday, with increasing ventilation providing lower concentrations of PM. The good air quality should continue through the middle of next week.---McAuliffe

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