Pittsburgh
 
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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
ACHD website | Air Quality Action Day Program | Forecast | PADEP website
 
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)
35 
Good
Health Message: None
Air Quality Index (AQI)
40 
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5)
35 
Good
Particles (PM2.5)
40 
Good
Forecast Discussion: Current Conditions: As of 2 PM on Thursday, partly sunny skies prevail over the region as an area of high pressure continues to build in from the west. At the same time, an area of low pressure slides off the New England coastline. The combination of the departing low and the incoming high has kept our winds out of the west today. The westerly winds have been gusting upwards of 25 miles per hour during the day. As a result, we have seen colder and drier air build in. In fact, temperatures are currently hovering in the low 20s. The combination of the cold temperatures and the strong winds have limited PM 2.5 concentrations to the good range. Expect the air quality to stay in the good category through tomorrow as higher pressure builds in. *** Friday's Forecast: So for Friday, expect mostly cloudy conditions to continue to persist even as the area of high pressure, which was off to our west on Thursday, slides east of our area. At the same time, a new clipper system will move in over the Great Lakes. As this system approaches, we could see some light snow develop across western PA. Overall, westerly flow from Thursday will turn southerly as the front approaches. This southerly flow will deliver relatively cold and dry air to the area. In fact, afternoon temperatures will be in low 20s. The continual influx of cold and dry air into the region will help to keep PM 2.5 levels in the good threshold. *** Extended Outlook: Over the coming days, expect a true arctic air mass to funnel southward across the region. After the passage of the clipper system late on Friday, a strong area of high pressure building in over the Plains will deliver a shot of air straight from the Arctic region. The core of this cold air will be centered over the New England states. However, we should see the coldest air of the season enter our region as well. Temperatures will be hovering in the 10s on Saturday into Sunday. Readings will begin to rebound on Monday into Tuesday as the core of the cold retreats to Canada. At the same time, a disturbance making its way out of the northern Plains will drop southward and form an East Coast storm. Exact precipitation type is up in the air. We will be closely watching this storm system as we proceed through the weekend. Overall, as long as the cold and dry stays in place, PM 2.5 levels will be in the good range. Once temperatures rebound closer to normal, PM 2.5 concentrations will rise back toward the good / moderate range. --Nolan

Current Conditions
Air Quality Index (AQI)
observed at 22:00 EST
38
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
Particles (PM2.5) 38 Good
Ozone 31 Good

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