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 6/15/2026 4:00:00 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 | 43 | 2.1 | 9 | ||||||
| Altoona | 0.4 | 28 | 3.4 | ||||||
| Arendtsville | 0.1 | 39 | 2.6 | 0.6 | 1.4 | 2.1 | |||
| Beaver Falls | 11 | 6.3 | 15 | 2 | 5.1 | 7.1 | |||
| Brighton Township | 0.4 | 18 | |||||||
| Bristol | 34 | ||||||||
| Carlisle | 3.3 | ||||||||
| Chambersburg | 39 | 3.1 | |||||||
| Charleroi | 0.6 | 24 | 4.2 | 0 | 1.9 | 1.8 | |||
| Chester | 33 | 1.7 | 0.1 | 2.8 | 3 | ||||
| Erie | 14 | 1.8 | 7 | ||||||
| Farrell | 16 | 3.8 | |||||||
| Florence | 0.4 | 19 | 5.5 | ||||||
| Fort McIntosh | 16 | 5.5 | |||||||
| Freemansburg | 0 | 43 | 1.8 | ||||||
| Greensburg | 26 | 5.5 | |||||||
| Harrisburg | 35 | 3.4 | |||||||
| Hershey | 38 | 3.1 | 8 | ||||||
| Holbrook | 24 | 4.5 | |||||||
| Houston | 20 | 6.5 | 0 | 1.3 | 1.4 | ||||
| Johnstown | 0.1 | 0.2 | 30 | 4.8 | 10 | ||||
| Kittanning | 18 | 4.5 | |||||||
| Kutztown | 41 | ||||||||
| Lancaster | 39 | 2.7 | 11 | ||||||
| Lancaster Downwind | 34 | 2.7 | |||||||
| Lebanon | 36 | 2.9 | |||||||
| Marcus Hook | 2.7 | ||||||||
| Methodist Hill | 40 | ||||||||
| Montoursville | 27 | ||||||||
| Moshannon | 25 | 4.2 | |||||||
| New Garden - Airport | 39 | 2.1 | 0.9 | ||||||
| New Milford | 2.3 | ||||||||
| Norristown | 34 | 2.6 | |||||||
| Peckville | 32 | ||||||||
| Reading Airport | 1 | 41 | 2.2 | ||||||
| Salladasburg | 3.7 | ||||||||
| Scranton | 0.2 | 0 | 30 | 2.8 | 8 | 0.4 | 2 | 2.5 | |
| State College | 0.1 | 32 | 3.5 | 1.2 | 0.2 | 1.5 | |||
| Strongstown | 0.6 | 26 | 4.4 | ||||||
| Swiftwater | 40 | 1.9 | |||||||
| Tioga County | 18 | 2.5 | |||||||
| Towanda | 21 | 3.0 | 0 | 0.9 | 0.7 | ||||
| Tunkhannock | 1.9 | ||||||||
| Uniontown | 21 | 5.9 | 0.3 | 3 | 3.4 | ||||
| Warren - Overlook | 0.5 | 13 | 5.7 | ||||||
| Warren East | 1.8 | ||||||||
| York | 0.9 | 0 | 3.6 | 0.4 | 4.1 | 4.6 | |||
| York Downwind | 37 |
| Site Name | 1-Hr SWS (mph) | 1-Hr VWS (mph) | 1-Hr VWD (degs) | 1-Hr AT (degF) | 1-Hr SR (w/m2) |
|---|---|---|---|---|---|
| Allentown | 5.5 | 5.1 | 325 | 62 | 0 |
| Altoona | 2.8 | 2.0 | 352 | 59 | 1 |
| Arendtsville | 9.1 | 8.9 | 299 | 63 | 0 |
| Beaver Falls | 1.0 | 0.8 | 215 | 57 | 0 |
| Brighton Township | 0.7 | 0.7 | 4 | 0 | |
| Bristol | 7.6 | 7.1 | 311 | 67 | 0 |
| Carlisle | 3.4 | 3.1 | 281 | 63 | 0 |
| Chambersburg | 3 | ||||
| Charleroi | 2.8 | 2.6 | 326 | 59 | 0 |
| Chester | 8.6 | 8.3 | 314 | 67 | 0 |
| Erie | 2.1 | 1.6 | 323 | 57 | 0 |
| Farrell | 2.4 | 2.2 | 317 | 56 | 0 |
| Florence | 0.9 | 0.9 | 4 | 0 | |
| Fort McIntosh | 2.1 | 2.0 | 285 | 57 | 0 |
| Freemansburg | 5.6 | 5.3 | 306 | 64 | 0 |
| Greensburg | 2.0 | 1.7 | 344 | 57 | 0 |
| Harrisburg | 1.9 | 1.8 | 326 | 64 | 0 |
| Hershey | 2.6 | 2.3 | 253 | 63 | 0 |
| Holbrook | 4.7 | 4.4 | 288 | 57 | 0 |
| Houston | 0.9 | 0.3 | 58 | 57 | 0 |
| Johnstown | 3.1 | 2.9 | 52 | 59 | 0 |
| Kittanning | 1.9 | 1.5 | 289 | 56 | 0 |
| Kutztown | 2.7 | 1.9 | 281 | 63 | 0 |
| Lancaster | 7.7 | 7.4 | 307 | 64 | 0 |
| Lancaster Downwind | |||||
| Lebanon | 3.4 | 3.1 | 321 | 62 | 0 |
| Marcus Hook | |||||
| Methodist Hill | |||||
| Montoursville | 3.0 | 2.6 | 282 | 60 | 0 |
| Moshannon | |||||
| New Garden - Airport | 6.8 | 6.2 | 315 | 64 | 0 |
| New Milford | 3.5 | 2.2 | 303 | 53 | 0 |
| Norristown | 5.2 | 4.9 | 292 | 65 | 0 |
| Peckville | 4.7 | 4.0 | 303 | 59 | 0 |
| Reading Airport | 7.2 | 6.9 | 306 | 64 | 0 |
| Salladasburg | 1.3 | 0.8 | 324 | 57 | 0 |
| Scranton | 2.5 | 2.0 | 319 | 60 | 4 |
| State College | 6.5 | 6.3 | 304 | 57 | 0 |
| Strongstown | 2.7 | 2.3 | 286 | 54 | 0 |
| Swiftwater | 7.0 | 6.5 | 359 | 60 | 0 |
| Tioga County | 2.6 | 1.2 | 343 | 47 | 0 |
| Towanda | 2.3 | 1.9 | 235 | 55 | 0 |
| Tunkhannock | 8.2 | 7.8 | 297 | 54 | 0 |
| Uniontown | |||||
| Warren - Overlook | 1.0 | 0.9 | 309 | 77 | 0 |
| Warren East | 5.2 | 5.1 | 243 | 55 | 0 |
| York | 5.6 | 5.4 | 309 | 64 | 0 |
| York Downwind | 1.6 | 1.6 | 4 | 1 |
For data comparision purposes, see the National Ambient Air Quality Standards on the EPA web site.
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