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 6/11/2026 8:00:00 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) |
|---|---|---|---|---|---|---|---|---|---|
| Allentown | 29 | 6.4 | 16 | ||||||
| Altoona | 0.6 | 28 | 10.7 | ||||||
| Arendtsville | 0.2 | 0.7 | 32 | 8.6 | 0.8 | 2 | 2.9 | ||
| Beaver Falls | 23 | 7.5 | 19 | 3.5 | 4.2 | 7.8 | |||
| Brighton Township | 1 | 27 | |||||||
| Bristol | 22 | ||||||||
| Carlisle | 8.8 | ||||||||
| Chambersburg | 31 | 12.5 | |||||||
| Charleroi | 1 | 27 | 7.0 | 0.8 | 2.2 | 3.1 | |||
| Chester | 26 | 5.4 | 6.3 | 9.7 | 16 | ||||
| Erie | 26 | 9.3 | 20 | ||||||
| Farrell | 27 | 10.4 | |||||||
| Florence | 0.4 | 28 | 7.4 | ||||||
| Fort McIntosh | 20 | 9.0 | |||||||
| Freemansburg | 0.1 | 26 | 6.2 | ||||||
| Greensburg | 9.5 | ||||||||
| Harrisburg | 27 | 10.5 | |||||||
| Hershey | 33 | 8.8 | 19 | ||||||
| Holbrook | 28 | 7.9 | |||||||
| Houston | 26 | 8.2 | 0.4 | 1.4 | 1.9 | ||||
| Johnstown | 0.1 | 27 | 9.4 | 16 | 0.7 | 2.9 | 3.7 | ||
| Kittanning | 25 | 10.1 | |||||||
| Kutztown | 25 | ||||||||
| Lancaster | 38 | 10.4 | 17 | ||||||
| Lancaster Downwind | 18 | 7.1 | |||||||
| Lebanon | 31 | 7.6 | |||||||
| Marcus Hook | 5.9 | ||||||||
| Montoursville | 32 | ||||||||
| Moshannon | 30 | 7.6 | |||||||
| New Garden - Airport | 33 | 7.5 | 1.1 | ||||||
| New Milford | 4.6 | ||||||||
| Norristown | 25 | 8.0 | |||||||
| Peckville | 24 | ||||||||
| Reading Airport | 0.9 | 31 | 7.1 | ||||||
| Salladasburg | 6.4 | ||||||||
| Scranton | 0.3 | 0 | 23 | 6.2 | 15 | 1.1 | 3.4 | 4.5 | |
| State College | 0.1 | 34 | 11.9 | 1.2 | 0.9 | 2.1 | |||
| Strongstown | 0.8 | 28 | 10.6 | ||||||
| Swiftwater | 25 | 7.1 | |||||||
| Tioga County | 35 | 7.5 | |||||||
| Towanda | 30 | 7.0 | 0 | 2.9 | 3.5 | ||||
| Tunkhannock | 5.7 | ||||||||
| Uniontown | 26 | 8.6 | 2.3 | 5.3 | 7.7 | ||||
| Warren - Overlook | 0.4 | 22 | 10.0 | ||||||
| Warren East | 1.5 | ||||||||
| York | 0.8 | 27 | 13.5 | 2.6 | 4.7 | 7.4 | |||
| York Downwind | 34 |
| Site Name | 1-Hr SWS (mph) | 1-Hr VWS (mph) | 1-Hr VWD (degs) | 1-Hr AT (degF) | 1-Hr SR (w/m2) |
|---|---|---|---|---|---|
| Allentown | 7.1 | 6.7 | 245 | 78 | 662 |
| Altoona | 334 | ||||
| Arendtsville | 4.5 | 3.4 | 215 | 82 | 392 |
| Beaver Falls | 3.0 | 2.1 | 156 | 82 | 505 |
| Brighton Township | 2.8 | 2.3 | 228 | 79 | 580 |
| Bristol | 6.0 | 5.5 | 279 | 80 | 486 |
| Carlisle | 3.5 | 3.0 | 230 | 80 | 284 |
| Chambersburg | 552 | ||||
| Charleroi | 7.4 | 7.0 | 181 | 79 | 418 |
| Chester | 6.9 | 6.4 | 294 | 81 | 482 |
| Erie | 3.2 | 2.1 | 152 | 80 | 411 |
| Farrell | 4.6 | 4.2 | 164 | 78 | 574 |
| Florence | 5.7 | 5.2 | 201 | 79 | 508 |
| Fort McIntosh | 3.8 | 3.2 | 215 | 80 | 515 |
| Freemansburg | 6.5 | 6.0 | 257 | 80 | 627 |
| Greensburg | 5.8 | 5.3 | 203 | 78 | 509 |
| Harrisburg | 1.1 | 0.9 | 285 | 83 | 380 |
| Hershey | 4.7 | 4.3 | 271 | 82 | 526 |
| Holbrook | 2.9 | 1.9 | 197 | 80 | 496 |
| Houston | 2.7 | 2.0 | 189 | 80 | 474 |
| Johnstown | 2.4 | 0.9 | 134 | 80 | 95 |
| Kittanning | 4.0 | 3.6 | 173 | 77 | 424 |
| Kutztown | 2.1 | 1.9 | 210 | 81 | 495 |
| Lancaster | 6.2 | 5.6 | 276 | 83 | 562 |
| Lancaster Downwind | |||||
| Lebanon | 3.2 | 2.7 | 256 | 80 | 552 |
| Marcus Hook | |||||
| Montoursville | 3.1 | 2.4 | 254 | 78 | 313 |
| Moshannon | |||||
| New Garden - Airport | 5.2 | 4.8 | 296 | 81 | 611 |
| New Milford | 2.9 | 2.5 | 265 | 74 | 404 |
| Norristown | 5.0 | 4.5 | 282 | 79 | 572 |
| Peckville | 3.9 | 3.4 | 220 | 76 | 310 |
| Reading Airport | 8.6 | 8.4 | 265 | 79 | 475 |
| Salladasburg | 2.0 | 1.5 | 136 | 77 | 290 |
| Scranton | 3.4 | 3.0 | 245 | 78 | 365 |
| State College | 10.6 | 10.2 | 278 | 78 | 492 |
| Strongstown | 4.1 | 3.6 | 257 | 75 | 422 |
| Swiftwater | 2.1 | 0.6 | 313 | 79 | 359 |
| Tioga County | 3.8 | 3.2 | 254 | 71 | 361 |
| Towanda | 3.1 | 2.4 | 237 | 80 | 391 |
| Tunkhannock | 5.0 | 4.2 | 237 | 79 | 709 |
| Uniontown | |||||
| Warren - Overlook | 1.2 | 0.7 | 220 | 75 | 198 |
| Warren East | 5.5 | 5.3 | 84 | 75 | 377 |
| York | 6.5 | 6.1 | 270 | 82 | 610 |
| York Downwind | 5.0 | 4.6 | 294 | 80 | 512 |
For data comparision purposes, see the National Ambient Air Quality Standards on the EPA web site.
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