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

Ambient Air Monitoring Data Reports

Latest Pollution and Weather Data

The data on this site is collected using sophisticated sampling equipment located across the state. Occasionally, hardware or software fails and provides no data or erroneous data until a technician can service it. In addition, this data has not yet been quality assured/quality controlled so some data may be incomplete or inaccurate. The final quality assured/quality controlled data can be found on EPA’s Air Quality Data website.

Pennsylvania Department of Environmental Protection
Bureau of Air Quality

Latest Hourly Data Collected on 6/12/2026 12:00:00 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			50	13.2	23
Altoona		1.3	49	4.9
Arendtsville	0.1	0.8	53	4.1		0.5	1.3	1.8
Beaver Falls			42	3.1	10	2.2	2.4	4.6
Brighton Township		1	39
Bristol			50
Carlisle				3.9
Chambersburg			54	5.0
Charleroi		0.8	47	2.4		0	1.7	1.8
Chester			58	6.6		2.1	10.5	12.6
Erie			47	2.6	11
Farrell			49	3.7
Florence		0.4	36	2.8
Fort McIntosh			39	3.0
Freemansburg		0.2	47	12.5
Greensburg			44	3.6
Harrisburg			50	6.7
Hershey			55	5.8	12
Holbrook			43	3.1
Houston			39	2.7		0.2	1.6	1.8
Johnstown	0.1	0.1	49	4.0	8	0.1	1.4	1.5
Kittanning			40	3.9
Kutztown			49
Lancaster			64	9.1	15
Lancaster Downwind			52	5.6
Lebanon			49	8.7
Marcus Hook				12.7
Methodist Hill			51
Montoursville
New Garden - Airport			53	7.5					1.1
New Milford				6.4
Norristown			56	11.3
Peckville			40
Reading Airport		1	57	8.1
Salladasburg				7.4
Scranton	0.3	0	38	10.1	18	0.4	1.7	2.2
State College		0.4	53	5.3		1.4	0.7	2.2
Strongstown		0.8	48	4.9
Swiftwater			36	12.2
Tioga County			22	7.9
Towanda			42	10.1		0	1.7	1.5
Tunkhannock				7.4
Uniontown			42	3.7		0.7	3.2	3.9
Warren - Overlook		0.4	40	3.4
Warren East		3.2
York		0.9	54	6.7		0.4	1.3	1.8
York Downwind			54

Site Name	1-Hr SWS (mph)	1-Hr VWS (mph)	1-Hr VWD (degs)	1-Hr AT (degF)	1-Hr SR (w/m2)
Allentown	4.7	3.9	254	86	725
Altoona	9.9	8.6	273	86	648
Arendtsville	14.4	13.6	289	89	749
Beaver Falls	2.7	1.8	236	74	439
Brighton Township	2.6	2.6	4	2
Bristol	7.1	6.6	277	89	619
Carlisle	12.6	11.9	274	89	795
Chambersburg					615
Charleroi	4.5	3.5	270	79	217
Chester	7.4	7.2	203	85	684
Erie	3.7	3.1	257	74	982
Farrell	6.4	5.6	264	76	831
Florence	3.8	3.0	263	73	148
Fort McIntosh	4.6	4.1	223	73	337
Freemansburg	7.2	6.5	275	87	682
Greensburg	6.4	5.9	244	77	74
Harrisburg	3.0	2.7	300	92	822
Hershey	8.1	7.4	265	91	1092
Holbrook	8.0	7.6	259	77	398
Houston	1.7	0.5	242	76	82
Johnstown	8.9	8.6	164	81	386
Kittanning	4.7	4.2	278	74	110
Kutztown	2.0	0.7	275	87	521
Lancaster	10.8	10.1	287	90	932
Lancaster Downwind
Lebanon	3.8	2.8	268	90	768
Marcus Hook
Methodist Hill
Montoursville	5.8	4.8	245	87	626
New Garden - Airport	7.3	6.7	254	88	557
New Milford	5.7	4.8	254	81	760
Norristown	5.2	4.4	258	88	585
Peckville	5.0	4.4	210	82	634
Reading Airport	9.4	9.0	266	88	880
Salladasburg	3.6	0.7	63	88	812
Scranton	4.1	3.2	226	85	666
State College	10.6	10.1	265	83	547
Strongstown	6.4	5.7	255	77	338
Swiftwater	3.8	0.6	249	83	947
Tioga County	3.9	2.8	242	76	336
Towanda	4.7	4.0	269	85	272
Tunkhannock	6.7	6.0	272	82	716
Uniontown
Warren - Overlook	2.8	2.3	273	76	513
Warren East	8.1	7.6	273	77	604
York	10.7	10.1	286	91	852
York Downwind	6.6	6.0	305	88	988

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