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 6/17/2025 10:00:00 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 | 16 | 3.2 | 6 | ||||||
| Altoona | -0.1 | 13 | 3.5 | ||||||
| Arendtsville | 0.2 | 0.1 | 16 | 1.8 | 1.1 | 2.2 | 3.4 | ||
| Beaver Falls | 22 | 9.4 | 17 | 2 | 5.2 | 7.3 | |||
| Brighton Township | 1.9 | 28 | |||||||
| Bristol | 19 | ||||||||
| Carlisle | 2.7 | ||||||||
| Charleroi | 5.7 | 0.5 | 2.1 | 2.6 | |||||
| Chester | 24 | 9.1 | 6.2 | 10.1 | 16.3 | ||||
| Erie | 0.2 | 24 | 6.8 | 13 | 0.2 | 2.1 | 2.3 | ||
| Farrell | 24 | 6.4 | |||||||
| Florence | 1.1 | 26 | 8.7 | ||||||
| Fort McIntosh | 24 | 10.0 | |||||||
| Freemansburg | 0.9 | 3.0 | |||||||
| Greensburg | 28 | 6.7 | |||||||
| Harrisburg | 11 | 3.5 | |||||||
| Hershey | 13 | 3.7 | 7 | ||||||
| Holbrook | 27 | 7.6 | |||||||
| Houston | 27 | 7.5 | 0.2 | 1.6 | 1.8 | ||||
| Johnstown | 0.3 | 0.8 | 19 | 3.3 | 8 | 1 | 2.2 | 3.3 | |
| Kittanning | 23 | 5.2 | |||||||
| Kutztown | 21 | ||||||||
| Lancaster | 4.9 | 8 | |||||||
| Lancaster Downwind | 12 | 6.0 | |||||||
| Lebanon | 14 | 3.3 | |||||||
| Marcus Hook | 6.5 | ||||||||
| Methodist Hill | 12 | ||||||||
| Montoursville | 17 | ||||||||
| New Garden - Airport | 20 | 7.5 | |||||||
| New Milford | 2.3 | ||||||||
| Norristown | 18 | 5.9 | |||||||
| Peckville | 20 | ||||||||
| Reading Airport | 0 | 19 | 4.4 | ||||||
| Salladasburg | 1.9 | ||||||||
| Scranton | 0.4 | 0 | 14 | 2.5 | 8 | 4.7 | 6.9 | 11.7 | |
| State College | 0.4 | 16 | 0 | 3.4 | 3.5 | ||||
| Strongstown | 2 | 6.5 | |||||||
| Swiftwater | 18 | ||||||||
| Tioga County | 19 | 1.2 | 0.6 | 0.9 | 1.6 | ||||
| Towanda | 19 | 2.1 | 1 | 1.9 | 3.4 | ||||
| Tunkhannock | |||||||||
| Uniontown | 33 | 8.3 | |||||||
| Warren - Overlook | 0.2 | ||||||||
| Warren East | 0.3 | ||||||||
| Wilkes-Barre | |||||||||
| York | 0.3 | 19 | 2.9 | 1.1 | 3 | 4.1 | |||
| York Downwind | 15 |
| Site Name | 1-Hr SWS (mph) | 1-Hr VWS (mph) | 1-Hr VWD (degs) | 1-Hr AT (degF) | 1-Hr SR (w/m2) |
|---|---|---|---|---|---|
| Allentown | 1.5 | 1.1 | 130 | 64 | 136 |
| Altoona | 4.0 | 3.6 | 230 | 70 | 247 |
| Arendtsville | 6.9 | 6.7 | 161 | 66 | 257 |
| Beaver Falls | 2.4 | 1.5 | 198 | 78 | 313 |
| Brighton Township | 2.7 | 2.3 | 241 | 76 | 339 |
| Bristol | 4.8 | 4.4 | 95 | 68 | 316 |
| Carlisle | 1.3 | 1.0 | 106 | 66 | 153 |
| Charleroi | 5.6 | 5.2 | 207 | 78 | 408 |
| Chester | 2.3 | 2.0 | 73 | 73 | 760 |
| Erie | 4.7 | 4.1 | 175 | 77 | 568 |
| Farrell | 4.1 | 3.8 | 170 | 74 | 313 |
| Florence | 5.8 | 5.3 | 220 | 76 | 344 |
| Fort McIntosh | 3.1 | 2.9 | 234 | 77 | 301 |
| Freemansburg | 1.6 | 1.4 | 101 | 65 | 125 |
| Greensburg | 3.8 | 1.6 | 263 | 76 | 240 |
| Harrisburg | 3.8 | 3.6 | 136 | 66 | 157 |
| Hershey | 4.8 | 4.7 | 91 | 65 | 147 |
| Holbrook | 0.9 | 0.9 | 4 | 0 | |
| Houston | 3.0 | 2.4 | 188 | 77 | 300 |
| Johnstown | 2.3 | 2.0 | 186 | 75 | 538 |
| Kittanning | 3.7 | 3.4 | 176 | 75 | 291 |
| Kutztown | 3.3 | 3.2 | 65 | 64 | 111 |
| Lancaster | 3.0 | 2.8 | 135 | 66 | 111 |
| Lancaster Downwind | |||||
| Lebanon | 2.7 | 2.3 | 110 | 65 | 153 |
| Marcus Hook | |||||
| Methodist Hill | |||||
| Montoursville | 3.3 | 2.9 | 128 | 67 | 179 |
| New Garden - Airport | 3.2 | 2.8 | 84 | 65 | 271 |
| New Milford | 4.0 | 3.4 | 180 | 65 | 171 |
| Norristown | 2.6 | 2.1 | 134 | 68 | 268 |
| Peckville | 2.6 | 2.0 | 232 | 69 | 176 |
| Reading Airport | 3.2 | 2.7 | 135 | 66 | 219 |
| Salladasburg | 1.4 | 0.8 | 24 | 69 | 168 |
| Scranton | 1.1 | 1.0 | 270 | 70 | 189 |
| State College | 3.4 | 2.8 | 207 | 66 | 163 |
| Strongstown | 5.4 | 4.7 | 155 | 72 | 349 |
| Swiftwater | 2.0 | 1.1 | 165 | 62 | 163 |
| Tioga County | 6.3 | 5.7 | 177 | 58 | 283 |
| Towanda | 4.6 | 3.9 | 165 | 69 | 232 |
| Tunkhannock | 7.8 | 7.6 | 144 | 66 | 276 |
| Uniontown | |||||
| Warren - Overlook | 0.9 | 0.2 | 348 | 38 | |
| Warren East | 3.7 | 3.4 | 86 | 72 | 286 |
| Wilkes-Barre | 1.6 | 1.3 | 283 | 71 | 246 |
| York | 3.4 | 3.2 | 107 | 67 | 171 |
| York Downwind | 3.4 | 3.2 | 166 | 64 | 231 |
For data comparision purposes, see the National Ambient Air Quality Standards on the EPA web site.
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