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 8/24/2026 8:00:00 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 | 25 | 7.6 | 19 | ||||||
| Altoona | 0.3 | 19 | 5.2 | ||||||
| Arendtsville | 0.0 | 0 | 28 | 7.0 | 0.6 | 1.2 | 1.8 | ||
| Beaver Falls | 24 | 5.1 | 14 | 0 | 4 | 4.1 | |||
| Brighton Township | 0.9 | 27 | |||||||
| Bristol | 19 | ||||||||
| Carlisle | 6.9 | ||||||||
| Chambersburg | 28 | 6.6 | |||||||
| Charleroi | 0.8 | 18 | 4.4 | 0.9 | 2.5 | 3.5 | |||
| Chester | 12 | 12.5 | 5 | 24.6 | 29.7 | ||||
| Erie | 0.2 | 24 | 3.0 | 7 | 0.2 | 0.8 | 1 | ||
| Farrell | 22 | 4.2 | |||||||
| Florence | 0.5 | 14 | 4.3 | ||||||
| Fort McIntosh | 22 | 4.8 | |||||||
| Freemansburg | 0 | 21 | 6.8 | 0 | 6.6 | 6.4 | |||
| Greensburg | 24 | 4.6 | |||||||
| Harrisburg | 26 | 6.5 | |||||||
| Hershey | 22 | 9.3 | 15 | ||||||
| Holbrook | 25 | 6.8 | |||||||
| Houston | 5 | 4.1 | 0.3 | 0.8 | 1.1 | ||||
| Johnstown | 0.1 | 0.3 | 23 | 5.1 | 10 | 0 | 1.8 | 1.5 | |
| Kittanning | 15 | 5.9 | |||||||
| Kutztown | 20 | ||||||||
| Lancaster | 15.9 | 26 | |||||||
| Lancaster Downwind | 5 | 33.1 | |||||||
| Lebanon | 11 | 13.0 | |||||||
| Marcus Hook | 10.4 | ||||||||
| Methodist Hill | 33 | ||||||||
| Montoursville | 21 | ||||||||
| Moshannon | 18 | 4.6 | |||||||
| New Garden - Airport | 24 | 9.3 | 6.1 | ||||||
| New Milford | 3.5 | ||||||||
| Norristown | 29 | 6.3 | |||||||
| Peckville | 24 | ||||||||
| Reading Airport | 1.5 | 14 | 6.4 | ||||||
| Salladasburg | 2.9 | ||||||||
| Scranton | 0.2 | 0.3 | 23 | 6.9 | 12 | 0.3 | 1.7 | 2.1 | |
| State College | 0.2 | 12 | 5.0 | ||||||
| Strongstown | 0.8 | 26 | 5.9 | ||||||
| Swiftwater | 20 | 7.2 | |||||||
| Tioga County | 26 | 3.2 | 0 | 1.8 | 1.7 | ||||
| Towanda | 13 | 3.3 | 0 | 0.7 | 0.8 | ||||
| Tunkhannock | 4.1 | ||||||||
| Uniontown | 14 | 6.4 | 0.3 | 3.3 | 3.6 | ||||
| Warren - Overlook | 0.5 | 22 | 3.9 | ||||||
| Warren East | 0.8 | ||||||||
| York | 0.7 | 24 | 11.0 | 0.6 | 4.8 | 5.5 | |||
| York Downwind | 31 |
| Site Name | 1-Hr SWS (mph) | 1-Hr VWS (mph) | 1-Hr VWD (degs) | 1-Hr AT (degF) | 1-Hr SR (w/m2) |
|---|---|---|---|---|---|
| Allentown | 2.7 | 2.4 | 241 | 67 | 0 |
| Altoona | 1.5 | 1.0 | 255 | 64 | 0 |
| Arendtsville | 8.2 | 8.1 | 293 | 67 | 0 |
| Beaver Falls | 1.1 | 0.5 | 155 | 67 | 0 |
| Brighton Township | 2.4 | 2.3 | 259 | 65 | 0 |
| Bristol | 1.1 | 0.9 | 276 | 69 | 0 |
| Carlisle | 3.1 | 3.0 | 264 | 68 | 0 |
| Chambersburg | 0 | ||||
| Charleroi | 2.6 | 2.5 | 267 | 65 | 0 |
| Chester | 3.0 | 2.9 | 317 | 72 | 0 |
| Erie | 1.8 | 1.1 | 275 | 64 | 0 |
| Farrell | 2.6 | 2.1 | 58 | 63 | 0 |
| Florence | 0.9 | 0.6 | 215 | 64 | 0 |
| Fort McIntosh | 2.2 | 1.8 | 251 | 68 | 0 |
| Freemansburg | 1.9 | 1.5 | 238 | 68 | 0 |
| Greensburg | 2.5 | 2.3 | 201 | 66 | 0 |
| Harrisburg | 0.5 | 0.5 | 345 | 69 | 0 |
| Hershey | 0.9 | 0.5 | 88 | 68 | 0 |
| Holbrook | 2.7 | 2.6 | 219 | 63 | 0 |
| Houston | 0.5 | 0.2 | 52 | 62 | 0 |
| Johnstown | 1.0 | 0.8 | 152 | 64 | 0 |
| Kittanning | 1.2 | 0.7 | 289 | 63 | 0 |
| Kutztown | 1.1 | 0.4 | 151 | 65 | 0 |
| Lancaster | 1.4 | 0.8 | 151 | 68 | 0 |
| Lancaster Downwind | |||||
| Lebanon | 1.1 | 1.0 | 192 | 65 | 0 |
| Marcus Hook | |||||
| Methodist Hill | |||||
| Montoursville | 1.2 | 0.7 | 5 | 63 | 0 |
| Moshannon | |||||
| New Garden - Airport | 3.4 | 3.3 | 313 | 67 | 0 |
| New Milford | 1.2 | 0.8 | 263 | 57 | 0 |
| Norristown | 1.7 | 0.9 | 297 | 69 | 0 |
| Peckville | 2.3 | 2.0 | 239 | 64 | 0 |
| Reading Airport | 1.6 | 1.4 | 266 | 66 | 0 |
| Salladasburg | 1.4 | 1.2 | 341 | 62 | 0 |
| Scranton | 2.7 | 2.4 | 239 | 64 | 0 |
| State College | 0.8 | 0.2 | 264 | 62 | 0 |
| Strongstown | 2.1 | 2.0 | 259 | 60 | 0 |
| Swiftwater | 0.9 | 0.5 | 214 | 60 | 0 |
| Tioga County | 3.4 | 2.7 | 266 | 53 | 0 |
| Towanda | 1.1 | 0.3 | 244 | 61 | 0 |
| Tunkhannock | 3.2 | 3.0 | 223 | 60 | 0 |
| Uniontown | |||||
| Warren - Overlook | 0.9 | 0.9 | 253 | 56 | 0 |
| Warren East | 2.3 | 1.6 | 185 | 59 | 0 |
| York | 1.1 | 0.4 | 256 | 68 | 0 |
| York Downwind | 1.9 | 1.7 | 282 | 66 | 72 |
For data comparision purposes, see the National Ambient Air Quality Standards on the EPA web site.
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