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 9/14/2026 3:00:00 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 | 33 | 1.6 | 6 | ||||||
| Altoona | 0.2 | 31 | 2.4 | ||||||
| Arendtsville | 0.1 | 0 | 38 | 2.9 | 0 | 1 | 1 | ||
| Beaver Falls | 39 | 3.3 | 8 | 0.1 | 1 | 1.1 | |||
| Brighton Township | 0.9 | 37 | |||||||
| Bristol | 36 | ||||||||
| Carlisle | 2.6 | ||||||||
| Chambersburg | 37 | 3.0 | |||||||
| Charleroi | 0.8 | 43 | 2.6 | 0.4 | 1.1 | 1.6 | |||
| Chester | 36 | 2.8 | 0.4 | 1.2 | 1.6 | ||||
| Erie | 0.2 | 34 | 1.8 | 4 | 0.6 | 0.5 | 1.1 | ||
| Farrell | 37 | 3.4 | |||||||
| Florence | 0 | 35 | 2.5 | ||||||
| Fort McIntosh | 39 | 3.4 | |||||||
| Freemansburg | 0 | 33 | 1.5 | 0.7 | 1.8 | 2.6 | |||
| Greensburg | 37 | 2.6 | |||||||
| Harrisburg | 31 | 2.5 | |||||||
| Hershey | 34 | 2.5 | 7 | ||||||
| Holbrook | 39 | 2.1 | |||||||
| Houston | 39 | 2.5 | 0 | 0.9 | 0.9 | ||||
| Johnstown | 0.1 | 0.8 | 35 | 2.8 | 5 | 0 | 1 | 0.9 | |
| Kittanning | 37 | 3.6 | |||||||
| Kutztown | 33 | ||||||||
| Lancaster | 35 | 3.0 | 10 | ||||||
| Lancaster Downwind | 33 | 2.9 | |||||||
| Lebanon | 31 | 2.3 | |||||||
| Marcus Hook | 2.7 | ||||||||
| Methodist Hill | 35 | ||||||||
| Montoursville | 31 | ||||||||
| Moshannon | 34 | 2.7 | |||||||
| New Garden - Airport | 38 | 2.6 | 1.5 | ||||||
| New Milford | 1.6 | ||||||||
| Peckville | 32 | ||||||||
| Reading Airport | 1.5 | 34 | 1.7 | ||||||
| Salladasburg | 1.4 | ||||||||
| Scranton | 0.1 | 0.1 | 30 | 2.1 | 5 | 0.9 | 1.3 | 2.3 | |
| State College | 0.2 | 34 | 2.7 | 0.1 | 1.3 | 1.5 | |||
| Strongstown | 0.8 | 34 | 2.9 | ||||||
| Swiftwater | 32 | 1.8 | |||||||
| Tioga County | 30 | 1.8 | 0 | 0.4 | 0.3 | ||||
| Towanda | 28 | 1.4 | 0 | 0.3 | 0.3 | ||||
| Tunkhannock | 1.4 | ||||||||
| Uniontown | 42 | 2.4 | 0.1 | 1.7 | 1.9 | ||||
| Warren - Overlook | 0 | 33 | 1.8 | ||||||
| Warren East | 2.9 | ||||||||
| York | 0.4 | 35 | 3.1 | ||||||
| York Downwind | 36 |
| Site Name | 1-Hr SWS (mph) | 1-Hr VWS (mph) | 1-Hr VWD (degs) | 1-Hr AT (degF) | 1-Hr SR (w/m2) |
|---|---|---|---|---|---|
| Allentown | 9.3 | 8.8 | 338 | 71 | 429 |
| Altoona | 3.7 | 2.2 | 350 | 72 | 545 |
| Arendtsville | 14.2 | 13.7 | 353 | 71 | 438 |
| Beaver Falls | 2.7 | 1.5 | 348 | 72 | 393 |
| Brighton Township | 3.8 | 2.9 | 0 | 69 | 553 |
| Bristol | 6.7 | 5.9 | 345 | 75 | 430 |
| Carlisle | 7.3 | 6.6 | 345 | 71 | 454 |
| Chambersburg | 407 | ||||
| Charleroi | 4.7 | 4.0 | 354 | 71 | 500 |
| Chester | 11.0 | 10.5 | 346 | 76 | 261 |
| Erie | 2.5 | 1.8 | 351 | 66 | 501 |
| Farrell | 4.9 | 4.2 | 8 | 67 | 389 |
| Florence | 4.8 | 4.2 | 11 | 70 | 572 |
| Fort McIntosh | 3.0 | 0.5 | 14 | 71 | 468 |
| Freemansburg | 8.3 | 7.7 | 328 | 73 | 428 |
| Greensburg | 5.2 | 4.6 | 340 | 68 | 533 |
| Harrisburg | 2.4 | 2.3 | 335 | 72 | 446 |
| Hershey | 4.9 | 4.2 | 8 | 73 | 441 |
| Holbrook | 4.0 | 3.0 | 336 | 68 | 534 |
| Houston | 2.2 | 1.3 | 350 | 71 | 475 |
| Johnstown | 4.8 | 4.2 | 33 | 69 | 513 |
| Kittanning | 5.6 | 5.1 | 346 | 68 | 506 |
| Kutztown | 3.8 | 3.0 | 352 | 73 | 445 |
| Lancaster | 7.6 | 7.1 | 326 | 73 | 487 |
| Lancaster Downwind | |||||
| Lebanon | 7.9 | 7.6 | 342 | 71 | 456 |
| Marcus Hook | |||||
| Methodist Hill | |||||
| Montoursville | 4.4 | 3.5 | 354 | 70 | 355 |
| Moshannon | |||||
| New Garden - Airport | 5.6 | 4.7 | 327 | 73 | 487 |
| New Milford | 4.7 | 3.4 | 303 | 65 | 470 |
| Peckville | 6.8 | 6.2 | 323 | 68 | 474 |
| Reading Airport | 8.1 | 7.4 | 342 | 73 | 461 |
| Salladasburg | 5.1 | 4.8 | 6 | 72 | 431 |
| Scranton | 2.8 | 2.1 | 335 | 70 | 483 |
| State College | 4.4 | 3.3 | 316 | 70 | 508 |
| Strongstown | 3.5 | 2.3 | 317 | 66 | 473 |
| Swiftwater | 6.6 | 6.0 | 355 | 67 | 468 |
| Tioga County | 2.5 | 1.3 | 28 | 59 | 221 |
| Towanda | |||||
| Tunkhannock | 9.1 | 8.5 | 299 | 65 | 494 |
| Uniontown | |||||
| Warren - Overlook | 1.6 | 1.2 | 346 | 66 | 535 |
| Warren East | 3.4 | 2.3 | 353 | 69 | 384 |
| York | 9.0 | 8.6 | 353 | 72 | 426 |
| York Downwind | 2.8 | 2.4 | 349 | 71 | 504 |
For data comparision purposes, see the National Ambient Air Quality Standards on the EPA web site.
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