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 4/22/2026 9:00:00 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 | 31 | 5.4 | 13 | ||||||
| Altoona | 0.7 | 44 | 5.2 | ||||||
| Arendtsville | 0.2 | 0.4 | 38 | 5.9 | 1.2 | 3.3 | 4.6 | ||
| Beaver Falls | 48 | 7.6 | 18 | 2.4 | 3.6 | 6.1 | |||
| Brighton Township | 0.3 | ||||||||
| Bristol | 42 | ||||||||
| Carlisle | 6.9 | ||||||||
| Charleroi | 0.3 | 51 | 9.1 | 0.6 | 2.4 | 3 | |||
| Chester | 38 | 5.6 | 1.7 | 6.8 | 8.6 | ||||
| Erie | 0.1 | 49 | 6.7 | 21 | 1 | 5.8 | 6.9 | ||
| Farrell | 46 | 6.2 | |||||||
| Florence | 1.4 | 45 | 6.2 | ||||||
| Fort McIntosh | 48 | 6.3 | |||||||
| Freemansburg | 0.1 | 34 | 4.8 | ||||||
| Greensburg | 46 | 6.9 | |||||||
| Harrisburg | 29 | 6.5 | |||||||
| Hershey | 6.3 | 13 | |||||||
| Holbrook | 48 | 6.7 | |||||||
| Houston | 47 | 7.2 | 0.6 | 2.8 | 3.4 | ||||
| Johnstown | 0.1 | 0.5 | 49 | 6.3 | 14 | 0.3 | 2.3 | 2.7 | |
| Kittanning | 43 | 6.2 | |||||||
| Kutztown | 33 | ||||||||
| Lancaster | 31 | 6.0 | 16 | ||||||
| Lancaster Downwind | 25 | 6.0 | |||||||
| Lebanon | 28 | 7.3 | |||||||
| Marcus Hook | 5.2 | ||||||||
| Methodist Hill | 49 | ||||||||
| Montoursville | 42 | ||||||||
| Moshannon | 5.6 | ||||||||
| New Garden - Airport | 42 | 5.2 | 1.4 | ||||||
| New Milford | 7.0 | ||||||||
| Norristown | 29 | 7.2 | |||||||
| Peckville | |||||||||
| Reading Airport | 0.3 | 32 | 6.8 | ||||||
| Salladasburg | 5.6 | ||||||||
| Scranton | 0.3 | 0 | 37 | 8.7 | 14 | ||||
| Strongstown | 1.4 | 6.3 | |||||||
| Swiftwater | 37 | 8.1 | |||||||
| Tioga County | 45 | 6.1 | |||||||
| Tunkhannock | 6.6 | ||||||||
| Uniontown | 42 | 7.0 | 1.7 | 4.9 | 6.6 | ||||
| Warren - Overlook | 0.7 | 50 | 6.5 | ||||||
| Warren East | 3.3 | ||||||||
| York | 0.6 | 27 | 8.0 | ||||||
| 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 | 2.4 | 2.2 | 82 | 44 | 96 |
| Altoona | 7.1 | 6.4 | 236 | 63 | 556 |
| Arendtsville | 3.1 | 2.7 | 120 | 53 | 581 |
| Beaver Falls | 4.0 | 3.1 | 277 | 67 | 595 |
| Brighton Township | 6.4 | 5.9 | 274 | 64 | 670 |
| Bristol | 3.6 | 3.4 | 156 | 51 | 76 |
| Carlisle | 2.6 | 2.2 | 93 | 49 | 597 |
| Charleroi | 7.7 | 7.0 | 207 | 63 | 644 |
| Chester | 4.2 | 3.4 | 173 | 55 | 77 |
| Erie | 4.0 | 3.7 | 270 | 61 | 606 |
| Farrell | 6.3 | 5.5 | 273 | 64 | |
| Florence | 5.6 | 4.6 | 248 | 65 | 625 |
| Fort McIntosh | 5.3 | 4.9 | 234 | 66 | 643 |
| Freemansburg | 2.0 | 1.7 | 96 | 45 | 79 |
| Greensburg | 8.2 | 7.4 | 220 | 61 | 699 |
| Harrisburg | 1.5 | 1.3 | 138 | 48 | 325 |
| Hershey | 3.3 | 2.9 | 89 | 47 | 334 |
| Holbrook | 8.6 | 8.1 | 246 | 60 | 504 |
| Houston | 5.1 | 3.8 | 241 | 65 | 631 |
| Johnstown | 6.8 | 6.4 | 176 | 62 | 377 |
| Kittanning | 5.3 | 4.6 | 240 | 62 | 499 |
| Kutztown | 4.7 | 4.4 | 54 | 46 | 215 |
| Lancaster | 3.1 | 2.8 | 155 | 48 | 105 |
| Lancaster Downwind | |||||
| Lebanon | 2.7 | 2.2 | 117 | 47 | 320 |
| Marcus Hook | |||||
| Methodist Hill | |||||
| Montoursville | 4.7 | 4.1 | 132 | 53 | 619 |
| Moshannon | |||||
| New Garden - Airport | 4.0 | 3.8 | 155 | 53 | 173 |
| New Milford | 5.7 | 5.0 | 178 | 45 | 217 |
| Norristown | 4.2 | 4.0 | 139 | 49 | 58 |
| Peckville | 3.9 | 3.3 | 189 | 48 | 230 |
| Reading Airport | 2.5 | 1.1 | 68 | 48 | 230 |
| Salladasburg | 3.1 | 2.0 | 191 | 58 | 526 |
| Scranton | 3.2 | 2.7 | 181 | 49 | 221 |
| Strongstown | 8.3 | 7.8 | 246 | 58 | 500 |
| Swiftwater | 2.5 | 2.0 | 178 | 42 | 141 |
| Tioga County | 4.6 | 3.6 | 193 | 48 | 610 |
| Tunkhannock | 10.3 | 10.1 | 148 | 45 | 176 |
| Uniontown | |||||
| Warren - Overlook | 4.3 | 4.0 | 264 | 61 | 455 |
| Warren East | 5.3 | 3.9 | 280 | 64 | 591 |
| York | 3.8 | 3.3 | 64 | 48 | 282 |
| York Downwind | 3.0 | 2.7 | 167 | 47 | 129 |
For data comparision purposes, see the National Ambient Air Quality Standards on the EPA web site.
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