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 7/16/2026 6:00:00 AM
| 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) |
|---|---|---|---|---|---|---|---|---|---|
| Altoona | 17 | 10.9 | |||||||
| Arendtsville | 0.3 | 0 | 32 | 10.8 | 0.7 | 5 | 5.8 | ||
| Beaver Falls | 15 | 11.3 | 37 | 3.9 | 10.2 | 14.2 | |||
| Brighton Township | 1.3 | 29 | |||||||
| Bristol | 2 | ||||||||
| Carlisle | 38.7 | ||||||||
| Chambersburg | 14.0 | ||||||||
| Charleroi | 1 | 23 | 8.6 | 0.6 | 4.5 | 5.1 | |||
| Chester | 12 | 71.9 | 3.5 | 15.4 | 18.9 | ||||
| Erie | 0.7 | 18 | 92.1 | 139 | 0.5 | 4.4 | 4.9 | ||
| Farrell | 34 | 24.1 | |||||||
| Florence | 0.5 | 29 | 10.1 | ||||||
| Fort McIntosh | 22 | 12.8 | |||||||
| Freemansburg | 0.5 | 1 | 62.7 | 19.8 | 16.4 | 36.3 | |||
| Greensburg | 22 | 11.3 | |||||||
| Harrisburg | 7 | 52.6 | |||||||
| Hershey | 2 | 59.0 | 81 | ||||||
| Holbrook | 20 | 9.8 | |||||||
| Houston | 25 | 10.8 | 0.4 | 3.6 | 4.1 | ||||
| Johnstown | 0.2 | 0.2 | 23 | 11.0 | 18 | 0.6 | 6.7 | 7.3 | |
| Kittanning | 27 | 13.2 | |||||||
| Kutztown | 2 | ||||||||
| Lancaster | 7 | 51.2 | 74 | ||||||
| Lancaster Downwind | 2 | 66.5 | |||||||
| Lebanon | 8 | 69.8 | |||||||
| Marcus Hook | 55.0 | ||||||||
| Methodist Hill | 40 | ||||||||
| Montoursville | 2 | ||||||||
| Moshannon | 29 | 11.4 | |||||||
| New Garden - Airport | 12 | 58.5 | 7.7 | ||||||
| New Milford | 25.7 | ||||||||
| Norristown | 4 | 61.3 | |||||||
| Peckville | 3 | ||||||||
| Reading Airport | 1.3 | 5 | 77.0 | ||||||
| Salladasburg | 45.1 | ||||||||
| Scranton | 0.6 | 0.2 | 0 | 33.8 | 48 | 23.8 | 7.7 | 31.5 | |
| State College | 1.1 | 32 | 13.4 | 1.4 | 2.2 | 3.6 | |||
| Strongstown | 1.4 | 32 | 12.2 | ||||||
| Swiftwater | 9 | 47.6 | |||||||
| Tioga County | 28 | 0.1 | 1.4 | 1.5 | |||||
| Towanda | 2 | 81.4 | 14 | 7.1 | 21.6 | ||||
| Tunkhannock | 40.0 | ||||||||
| Uniontown | 23 | 15.9 | 1.4 | 7.9 | 9.4 | ||||
| Warren - Overlook | 0.5 | 19 | 100.6 | ||||||
| Warren East | 0.3 | ||||||||
| York | 0.6 | 29 | 40.3 | 1.7 | 6.3 | 8 | |||
| York Downwind | 26 |
| Site Name | 1-Hr SWS (mph) | 1-Hr VWS (mph) | 1-Hr VWD (degs) | 1-Hr AT (degF) | 1-Hr SR (w/m2) |
|---|---|---|---|---|---|
| Altoona | 1.6 | 0.9 | 87 | 77 | 85 |
| Arendtsville | 2.2 | 1.5 | 191 | 77 | 44 |
| Beaver Falls | 1.1 | 0.9 | 139 | 76 | 41 |
| Brighton Township | 3.4 | 3.3 | 258 | 74 | 51 |
| Bristol | 0.9 | 0.6 | 242 | 75 | 72 |
| Carlisle | 0.7 | 0.2 | 203 | 75 | 71 |
| Chambersburg | 129 | ||||
| Charleroi | 4.0 | 3.8 | 150 | 76 | 72 |
| Chester | 2.3 | 2.2 | 331 | 79 | 68 |
| Erie | 1.2 | 1.0 | 313 | 72 | 45 |
| Farrell | 2.8 | 2.7 | 314 | 74 | 86 |
| Florence | 2.9 | 2.7 | 251 | 75 | 44 |
| Fort McIntosh | 2.4 | 2.2 | 250 | 76 | 27 |
| Freemansburg | 1.4 | 1.1 | 185 | 72 | 22 |
| Greensburg | 3.8 | 3.5 | 203 | 74 | 48 |
| Harrisburg | 0.4 | 0.2 | 259 | 77 | 70 |
| Hershey | 1.6 | 1.3 | 273 | 75 | 73 |
| Holbrook | 1.7 | 1.3 | 201 | 72 | 102 |
| Houston | 1.4 | 0.8 | 226 | 76 | 23 |
| Johnstown | 0.5 | 0.3 | 126 | 76 | 18 |
| Kittanning | 1.4 | 1.2 | 214 | 76 | 128 |
| Kutztown | 1.3 | 0.4 | 78 | 73 | 56 |
| Lancaster | 1.7 | 1.5 | 169 | 76 | 61 |
| Lancaster Downwind | |||||
| Lebanon | 0.8 | 0.3 | 354 | 75 | 65 |
| Marcus Hook | |||||
| Methodist Hill | |||||
| Montoursville | 1.5 | 0.3 | 318 | 70 | 9 |
| Moshannon | |||||
| New Garden - Airport | 1.5 | 0.6 | 335 | 76 | 62 |
| New Milford | 1.6 | 1.4 | 351 | 64 | 26 |
| Norristown | 1.0 | 0.2 | 145 | 77 | 51 |
| Peckville | 1.2 | 0.5 | 53 | 67 | 17 |
| Reading Airport | 1.3 | 0.6 | 27 | 74 | 38 |
| Salladasburg | 1.0 | 0.4 | 306 | 69 | 4 |
| Scranton | 0.2 | 0.1 | 69 | 66 | 43 |
| State College | 3.7 | 3.4 | 241 | 76 | 78 |
| Strongstown | 3.3 | 2.9 | 265 | 73 | 57 |
| Swiftwater | 1.1 | 0.6 | 287 | 66 | 30 |
| Tioga County | 1.2 | 0.8 | 282 | 65 | 51 |
| Towanda | 0.9 | 0.7 | 298 | 68 | 27 |
| Tunkhannock | 1.5 | 1.0 | 195 | 66 | 20 |
| Uniontown | |||||
| Warren - Overlook | 1.1 | 0.6 | 168 | 31 | |
| Warren East | 1.8 | 1.1 | 290 | 71 | 39 |
| York | 2.4 | 2.2 | 231 | 78 | 68 |
| York Downwind | 3.4 | 3.4 | 221 | 74 | 56 |
For data comparision purposes, see the National Ambient Air Quality Standards on the EPA web site.
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