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 10/12/2026 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 | 23 | 2.4 | 8 | ||||||
| Altoona | 0.3 | 27 | 1.0 | ||||||
| Arendtsville | 0.1 | 0.1 | 26 | 1.1 | |||||
| Beaver Falls | 13 | 4.6 | 10 | 3 | 6.4 | 9.4 | |||
| Brighton Township | 0.6 | 16 | |||||||
| Bristol | 27 | ||||||||
| Carlisle | 2.1 | ||||||||
| Chambersburg | 26 | 1.9 | |||||||
| Charleroi | 0.9 | 18 | 2.7 | 1.2 | 5 | 6.3 | |||
| Chester | 26 | 2.3 | 2 | 3.3 | 5.4 | ||||
| Erie | 0.2 | 26 | 4.6 | 21 | 1.1 | 6.6 | 7.7 | ||
| Farrell | 19 | 2.9 | |||||||
| Florence | 0 | 17 | 3.7 | ||||||
| Fort McIntosh | 18 | 4.2 | |||||||
| Freemansburg | 0 | 20 | 2.1 | 2.2 | 6.6 | 8.8 | |||
| Greensburg | 15 | 3.2 | |||||||
| Harrisburg | 20 | 2.5 | |||||||
| Hershey | 26 | 1.7 | 5 | ||||||
| Holbrook | 17 | 2.7 | |||||||
| Houston | 19 | 4.0 | 0.2 | 2.2 | 2.5 | ||||
| Johnstown | 0.3 | 0.8 | 18 | 2.4 | 6 | 0.7 | 7.2 | 8 | |
| Kittanning | 18 | 3.4 | |||||||
| Kutztown | 26 | ||||||||
| Lancaster | 23 | 3.3 | 11 | ||||||
| Lancaster Downwind | 24 | 3.4 | |||||||
| Landenberg | 2.5 | 7.5 | 2.3 | ||||||
| Lebanon | 25 | 1.6 | |||||||
| Marcus Hook | 2.3 | ||||||||
| Montoursville | 18 | ||||||||
| New Garden - Airport | 26 | 2.6 | 2 | ||||||
| New Milford | 1.3 | ||||||||
| Norristown | 25 | 2.3 | |||||||
| Peckville | 24 | ||||||||
| Reading Airport | 0.1 | 26 | 1.9 | ||||||
| Salladasburg | 3.6 | ||||||||
| Scranton | 0.1 | 0.2 | 22 | 2.2 | 6 | 1 | 3 | 4 | |
| State College | 0 | 24 | 2.2 | 2.5 | 1.5 | 4 | |||
| Strongstown | 1 | 20 | 2.4 | ||||||
| Swiftwater | 28 | 1.0 | |||||||
| Tioga County | 26 | 1.9 | 0 | 0.8 | 0.6 | ||||
| Towanda | 17 | 2.4 | 1 | 3.2 | 4.2 | ||||
| Tunkhannock | 2.1 | ||||||||
| Uniontown | 20 | 2.8 | 0.5 | 2.4 | 3 | ||||
| Warren - Overlook | 0.5 | 21 | 2.9 | ||||||
| Warren East | 1.6 | ||||||||
| York | 0.6 | 19 | 3.2 | ||||||
| York Downwind | 24 |
| Site Name | 1-Hr SWS (mph) | 1-Hr VWS (mph) | 1-Hr VWD (degs) | 1-Hr AT (degF) | 1-Hr SR (w/m2) |
|---|---|---|---|---|---|
| Allentown | 3.5 | 3.1 | 316 | 59 | 231 |
| Altoona | 2.4 | 1.9 | 34 | 61 | 149 |
| Arendtsville | 11.7 | 11.5 | 328 | 62 | 264 |
| Beaver Falls | 1.8 | 1.4 | 203 | 61 | 59 |
| Brighton Township | 2.0 | 1.8 | 246 | 59 | 60 |
| Bristol | 5.8 | 5.3 | 354 | 58 | 276 |
| Carlisle | 4.0 | 3.3 | 280 | 60 | 114 |
| Chambersburg | 314 | ||||
| Charleroi | 2.0 | 0.9 | 171 | 60 | 54 |
| Chester | 9.4 | 9.1 | 345 | 60 | 135 |
| Erie | 1.8 | 1.5 | 269 | 63 | 87 |
| Farrell | 2.7 | 2.4 | 248 | 59 | 50 |
| Florence | 2.9 | 2.7 | 223 | 60 | 57 |
| Fort McIntosh | 3.5 | 3.2 | 245 | 61 | 96 |
| Freemansburg | 3.1 | 2.7 | 272 | 60 | 205 |
| Greensburg | 3.1 | 2.8 | 213 | 57 | 44 |
| Harrisburg | 1.5 | 1.4 | 317 | 61 | 329 |
| Hershey | 4.8 | 4.5 | 328 | 61 | 195 |
| Holbrook | 2.9 | 2.7 | 232 | 57 | 53 |
| Houston | 1.9 | 1.5 | 226 | 60 | 50 |
| Johnstown | 1.4 | 0.8 | 58 | 59 | 59 |
| Kittanning | 2.6 | 2.3 | 242 | 58 | 64 |
| Kutztown | 1.9 | 1.0 | 31 | 61 | 273 |
| Lancaster | 6.2 | 5.8 | 322 | 59 | 228 |
| Lancaster Downwind | |||||
| Landenberg | 7.2 | 6.8 | 342 | 57 | 261 |
| Lebanon | 2.9 | 2.5 | 336 | 62 | 266 |
| Marcus Hook | |||||
| Montoursville | 4.6 | 4.1 | 266 | 59 | 258 |
| New Garden - Airport | 4.7 | 3.6 | 337 | 58 | 249 |
| New Milford | 2.2 | 1.2 | 286 | 53 | 91 |
| Norristown | 3.9 | 3.0 | 330 | 58 | 197 |
| Peckville | 2.0 | 1.5 | 53 | 56 | 47 |
| Reading Airport | 4.4 | 4.0 | 340 | 61 | 273 |
| Salladasburg | 2.0 | 1.8 | 181 | 61 | 124 |
| Scranton | 1.5 | 1.0 | 355 | 57 | 94 |
| State College | 4.8 | 4.5 | 305 | 58 | 127 |
| Strongstown | 3.2 | 2.9 | 270 | 55 | 22 |
| Swiftwater | 5.7 | 5.4 | 8 | 58 | 313 |
| Tioga County | 2.9 | 2.0 | 53 | 51 | 57 |
| Towanda | |||||
| Tunkhannock | 5.1 | 4.9 | 278 | 54 | 141 |
| Uniontown | |||||
| Warren - Overlook | 0.6 | 0.6 | 246 | 57 | 13 |
| Warren East | 4.5 | 3.8 | 252 | 59 | 19 |
| York | 4.7 | 4.4 | 326 | 58 | 127 |
| York Downwind | 3.0 | 2.8 | 342 | 56 | 197 |
For data comparision purposes, see the National Ambient Air Quality Standards on the EPA web site.
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