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 10/17/2025 2:00:00 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 | 34 | 1.5 | 5 | ||||||
| Altoona | 0.1 | 40 | 1.8 | ||||||
| Arendtsville | 0.2 | 0.3 | 43 | 2.2 | 0.1 | 0.9 | 1.1 | ||
| Beaver Falls | 40 | 2.8 | 9 | 1 | 2.8 | 3.9 | |||
| Brighton Township | 0 | 42 | |||||||
| Bristol | 39 | ||||||||
| Carlisle | 2.3 | ||||||||
| Charleroi | 0 | 38 | 2.6 | 0.5 | 2 | 2.5 | |||
| Chester | 41 | 2.3 | 0.5 | 1.8 | 2.4 | ||||
| Erie | 0.0 | 32 | 5.0 | 13 | 0.3 | 2.6 | 2.9 | ||
| Florence | 0 | 41 | 4.4 | ||||||
| Fort McIntosh | 39 | 2.8 | |||||||
| Freemansburg | 0.5 | 34 | 1.6 | 1 | 2.6 | 3.6 | |||
| Greensburg | 40 | 3.0 | |||||||
| Harrisburg | 35 | 2.1 | |||||||
| Hershey | 37 | 2.3 | 9 | ||||||
| Holbrook | 41 | 1.8 | |||||||
| Houston | 43 | 2.8 | 0.7 | 2.2 | 3 | ||||
| Johnstown | 0.1 | 0.1 | 40 | 2.0 | 7 | 0.4 | 1.4 | 1.8 | |
| Kittanning | 38 | 2.7 | |||||||
| Kutztown | 34 | ||||||||
| Lancaster | 36 | 2.4 | 8 | ||||||
| Lancaster Downwind | 34 | 3.6 | |||||||
| Lebanon | 35 | 2.1 | |||||||
| Marcus Hook | 1.7 | ||||||||
| Methodist Hill | 41 | ||||||||
| Montoursville | 33 | ||||||||
| New Garden - Airport | 39 | 2.0 | |||||||
| New Milford | 1.7 | ||||||||
| Norristown | 40 | 1.2 | |||||||
| Peckville | 34 | ||||||||
| Reading Airport | 1 | 35 | 1.7 | ||||||
| Salladasburg | 1.5 | ||||||||
| Scranton | 0.1 | 0 | 31 | 1.8 | 6 | 1.1 | 1.6 | 2.8 | |
| State College | 0.3 | 42 | 2.1 | 0 | 1.2 | 0.9 | |||
| Strongstown | 0.3 | 39 | 2.6 | ||||||
| Swiftwater | 32 | 1.9 | |||||||
| Tioga County | 35 | 2.2 | 0 | 0.4 | 0.3 | ||||
| Towanda | 34 | 2.0 | 0 | 0.6 | 1.1 | ||||
| Tunkhannock | 1.4 | ||||||||
| Uniontown | 42 | 2.4 | 0.8 | 1.7 | 2.5 | ||||
| Warren - Overlook | 0 | 38 | 2.4 | ||||||
| Warren East | 1.1 | ||||||||
| York | 0.8 | 37 | 3.3 | 2.4 | 3.6 | 6 | |||
| York Downwind | 35 |
| Site Name | 1-Hr SWS (mph) | 1-Hr VWS (mph) | 1-Hr VWD (degs) | 1-Hr AT (degF) | 1-Hr SR (w/m2) |
|---|---|---|---|---|---|
| Allentown | 7.2 | 6.7 | 303 | 58 | 275 |
| Altoona | 3.8 | 2.1 | 334 | 67 | 423 |
| Arendtsville | 4.9 | 3.2 | 333 | 63 | 436 |
| Beaver Falls | 2.6 | 1.8 | 149 | 65 | 372 |
| Brighton Township | 3.1 | 1.8 | 167 | 63 | 492 |
| Bristol | 5.4 | 4.5 | 309 | 63 | |
| Carlisle | 5.5 | 5.0 | 324 | 61 | 437 |
| Charleroi | 1.7 | 0.9 | 78 | 66 | 501 |
| Chester | 8.2 | 7.7 | 327 | 65 | 438 |
| Erie | 2.1 | 1.8 | 340 | 60 | 149 |
| Florence | 3.5 | 2.4 | 198 | 65 | 461 |
| Fort McIntosh | 2.5 | 2.0 | 116 | 64 | 467 |
| Freemansburg | 6.5 | 6.1 | 317 | 60 | 275 |
| Greensburg | 2.9 | 1.2 | 249 | 61 | 391 |
| Harrisburg | 1.1 | 0.8 | 317 | 62 | 268 |
| Hershey | 3.7 | 2.7 | 325 | 62 | 251 |
| Holbrook | 2.0 | 0.2 | 90 | 64 | 464 |
| Houston | 2.8 | 1.7 | 169 | 65 | 417 |
| Johnstown | 5.8 | 5.6 | 36 | 63 | 451 |
| Kittanning | 3.6 | 2.7 | 227 | 63 | 424 |
| Kutztown | 4.1 | 3.7 | 357 | 59 | 182 |
| Lancaster | 4.9 | 4.4 | 337 | 60 | 252 |
| Lancaster Downwind | |||||
| Lebanon | 4.4 | 3.9 | 336 | 61 | 345 |
| Marcus Hook | |||||
| Methodist Hill | |||||
| Montoursville | 4.5 | 4.2 | 230 | 60 | 244 |
| New Garden - Airport | 5.9 | 5.3 | 301 | 61 | 289 |
| New Milford | 4.5 | 2.9 | 307 | 54 | 377 |
| Norristown | 5.7 | 5.2 | 316 | 63 | 344 |
| Peckville | 4.8 | 4.0 | 328 | 57 | 450 |
| Reading Airport | 4.2 | 3.7 | 342 | 59 | 153 |
| Salladasburg | 4.3 | 3.5 | 12 | 64 | 324 |
| Scranton | 2.3 | 1.9 | 296 | 58 | 270 |
| State College | 3.1 | 2.0 | 92 | 63 | 359 |
| Strongstown | 3.5 | 2.6 | 291 | 60 | 439 |
| Swiftwater | 5.4 | 4.9 | 0 | 54 | 282 |
| Tioga County | 2.7 | 1.5 | 324 | 52 | 299 |
| Towanda | 3.8 | 2.0 | 305 | 61 | 395 |
| Tunkhannock | 7.3 | 6.5 | 304 | 55 | 296 |
| Uniontown | |||||
| Warren - Overlook | 1.7 | 0.4 | 305 | 61 | 177 |
| Warren East | 1.8 | 0.5 | 259 | 62 | 220 |
| York | 6.1 | 5.6 | 330 | 61 | 397 |
| York Downwind | 2.7 | 2.5 | 315 | 59 | 223 |
For data comparision purposes, see the National Ambient Air Quality Standards on the EPA web site.
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