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
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)
Health Message: None
Data Not Available
AQI - Pollutant Details
Particles (PM2.5)
Data Not Available
Forecast Discussion: Current Conditions: As of 2 PM on Wednesday, mostly sunny skies persist across the region as an area of high pressure begins to build in from the west. Right now, the high pressure system is centered over the Ohio Valley / Great Lakes region. The clockwise flow around the high is helping to drive colder and drier air into the region. As a result, temperatures are currently hovering in the upper 30s. The combination of the cool and dry conditions over the region and the moderate winds are helping to hold PM 2.5 levels within the good threshold. Expect the good air quality to linger into tomorrow as warmer air moves in. *** Thursday's Forecast: So for Thursday, expect mostly sunny skies to continue to persist as the area of high pressure, which was off to our west on Wednesday, moves east and over the Northeastern US. This eastward movement of the high will end up turning our winds more out of the southeast, allowing warmer air to build in. Dewpoint temperatures (moisture levels) will also be on the increase (just not as quickly as temperatures). Expect afternoon highs to peak in the low 60s. Regardless of the more seasonable temperatures, the combination of the dry air and strong afternoon flow from the southeast will help to keep PM 2.5 levels from rising out of the good category. *** Extended Outlook: Over the coming days, expect to see temperatures remain at to slightly above normal as a few more disturbances swing through the region. Here is how things are shaping up... As we approach the weekend, we expect to see temperatures warm initially as the high pressure system, which was over the Northeastern US on Thursday. slides out into the Atlantic. At the same time, a new cold front will be advancing through the Great Lakes / Northeastern US. This front is expected to press through our area on Saturday. Once it does push through, expect the winds to swing back out of the north and force cooler, drier conditions into western PA. The coldest air will only linger for a day (on Saturday) before a new area of high pressure builds in. Temperatures will rebound nicely on Sunday into Monday ahead of the next disturbance, which is slated to push some more rain into the region on Tuesday. Cooler, drier air will build in initially on Wednesday before a warmer regime returns in the Thursday to Saturday time frame. Overall, air quality levels are expected to remain near the good / moderate threshold over the coming week. Highest concentrations are expected during times when the warmest temperatures and highest moisture levels coexist across the region (this Friday, next Monday and next Thursday). --Nolan

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