Agency Pennsylvania MORE AGENCIES MORE SERVICES Josh Shapiro, Governor Jessica Shirley, Acting Secretary

Ambient Air Monitoring Data Reports

Latest Pollution and Weather Data

Pennsylvania Department of Environmental Protection
Bureau of Air Quality

Latest Hourly Data Collected on 3/20/2025 6:00:00 PM

Site Name	1-Hr CO (ppm)	1-Hr SO2 (ppb)	1-Hr Ozone (ppb)	1-Hr PM-2.5 (ug/m3)	1-Hr PM-10 (ug/m3)	1-Hr NO (ppb)	1-Hr NO2 (ppb)	1-Hr NOX (ppb)	1-Hr H2S (ppb)
Allentown			51	9.0	17
Altoona		0	24	5.0
Arendtsville	0.2	0.2	38	5.9		0.1	2	2.1
Beaver Falls			25	1.3	2	0.7	2.6	3.4
Brighton Township		0	29
Bristol			54
Carlisle				4.9
Charleroi		0.2	25	2.5		0	2.4	2.4
Chester			50	9.7		0	2.8	2.6
Erie	0.2		35	0.7	1	0	1.7	1.7
Farrell			29	1.0
Florence		0.4	28	1.8
Fort McIntosh			28	1.8
Freemansburg		0.9	37	8.5		0.5	4.7	5.3
Greensburg			21	4.4
Harrisburg			41	5.3
Hershey				5.0	12
Holbrook			28	2.1
Houston			28	2.3		0.2	1.9	2.1
Johnstown	0.1	1.1	22	4.7	12	0	2.4	2.3
Kittanning			27	2.8
Kutztown			40
Lancaster			47	10.9	20
Lancaster Downwind			44	13.8
Lebanon			43	7.1
Marcus Hook				10.9
Methodist Hill			39
Montoursville			42
New Garden - Airport			45	11.1
New Milford				4.0
Norristown			45	10.8
Peckville			47
Reading Airport		1.1	50	14.7
Salladasburg				5.7
Scranton	0.3	0.9	44	9.9	18	0.4	3.4	3.9
State College		0.5	31	6.2		0.9	2.1	3.1
Strongstown		0.6	23	5.5
Swiftwater			39
Tioga County			40	5.1		0.5	2.3	2.9
Towanda			41	4.9		0	1.1	1.1
Tunkhannock				3.9
Uniontown			25	3.1
Warren - Overlook		0
Warren East		2.2
Wilkes-Barre
York		0	41	5.9		0	2.5	2.4
York Downwind			42

Site Name	1-Hr SWS (mph)	1-Hr VWS (mph)	1-Hr VWD (degs)	1-Hr AT (degF)	1-Hr SR (w/m2)
Allentown	4.0	3.9	140	62	0
Altoona	7.5	6.4	307	50	6
Arendtsville	15.8	15.6	312	51	0
Beaver Falls	5.1	4.2	299	40	0
Brighton Township	9.8	9.1	278	38	0
Bristol	7.2	6.8	153	62	0
Carlisle	8.3	7.5	295	50	0
Charleroi	9.8	8.8	298	44	0
Chester	7.0	6.5	167	61	0
Erie	9.4	9.2	253	35	0
Farrell	11.3	11.0	306	36	0
Florence	7.2	6.7	264	40	0
Fort McIntosh	6.5	5.8	258	41	0
Freemansburg	3.9	3.3	85	62	0
Greensburg	11.7	11.2	277	44	0
Harrisburg	9.7	9.3	307	52	0
Hershey	11.7	11.3	288	52	0
Holbrook	17.8	17.4	288	39	0
Houston	6.1	5.4	303	40	0
Johnstown	6.1	5.4	53	48	0
Kittanning	6.2	5.4	273	39	0
Kutztown	1.9	1.2	289	61	0
Lancaster	12.9	11.9	291	59	0
Lancaster Downwind
Lebanon	10.0	9.4	302	56	0
Marcus Hook
Methodist Hill				44
Montoursville	4.9	4.6	297	52	0
New Garden - Airport	7.5	3.0	263	56	0
New Milford	4.9	4.1	286	50	0
Norristown	6.1	5.7	159	64	0
Peckville	6.6	5.9	309	58	0
Reading Airport	11.6	10.7	276	62	0
Salladasburg	1.8	0.5	308	50	0
Scranton	5.7	5.2	318	58	0
State College	8.1	7.8	282	49	0
Strongstown	6.6	5.9	279	43	0
Swiftwater	2.7	1.7	93	57	0
Tioga County	4.2	3.7	261	41	0
Towanda	5.9	5.4	265	52	0
Tunkhannock	8.6	8.2	282	51	0
Uniontown	14.8	14.4	234	67	1
Warren - Overlook	9.5	8.8	273	40	0
Warren East	10.4	9.3	290	43	0
Wilkes-Barre	5.2	4.4	291	60	0
York	9.8	9.4	301	53	0
York Downwind	7.8	7.0	305	52	0

Caution: Data is not validated

For data comparision purposes, see the National Ambient Air Quality Standards on the EPA web site.

Weather Measurement Definitions

AT = Ambient (Outside) Temperature (degrees Farenheit)
SR = Solar Radiation (watts per square meter) indicates amount of sunshine
SWS = Scalar Arithmetic Averaged Wind Speed (miles per hour)
VWS = Vector Averaged Wind Speed (miles per hour)
VWD = Vector Averaged Wind Direction (compass degrees where 0=north, 90=east, 180=south, 270=west)

Site Locations by County

Bucks County - Bristol
Delaware County - Chester, Marcus Hook
Montgomery County - Norristown
Chester County - New Garden
Northampton County - Easton, Freemansburg
Lehigh County - Allentown
Berks County - Reading, Kutztown
Lackawanna County - Peckville, Scranton
Luzerne County - Wilkes-Barre
Monroe County - Swiftwater
Lancaster County - Lancaster, Lancaster Downwind
York County - York, York Downwind
Dauphin County - Hershey, Harrisburg
Lebanon County - Lebanon
Cumberland County - Carlisle
Franklin County - Methodist Hill
Adams County - Arendtsville
Centre County - State College
Lycoming County - Montoursville
Tioga County - Tioga County
Bradford County - Towanda
Clearfield County - Moshannon
Blair County - Altoona
Cambria County - Johnstown
Armstrong County - Kittanning
Indiana County - Strongstown
Westmoreland County - Greensburg
Washington County - Chaleroi, Washington, Florence, Houston
Beaver County - Brighton Township, Beaver Falls, Hookstown
Greene County - Holbrook
Lawrence County - New Castle
Mercer County - Farrell
Erie County - Erie
Warren County - Warren

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