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 8/5/2026 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 | 11 | 6.5 | 20 | ||||||
| Altoona | 0.5 | 14 | 5.6 | ||||||
| Arendtsville | 0 | 4.3 | 1.1 | 3.2 | 4.3 | ||||
| Beaver Falls | 11 | 9.7 | 31 | 12.5 | 16.1 | 28.7 | |||
| Brighton Township | 19 | ||||||||
| Bristol | 18 | ||||||||
| Carlisle | 5.5 | ||||||||
| Chambersburg | 14 | 8.6 | |||||||
| Charleroi | 0.8 | 15 | 5.2 | 4.5 | 10.3 | 14.9 | |||
| Chester | 16 | 5.1 | 5.8 | 10.7 | 16.5 | ||||
| Erie | 0.2 | 37 | 4.9 | 20 | 0.8 | 3.6 | 4.4 | ||
| Farrell | 34 | 5.9 | |||||||
| Florence | 0.5 | 16 | 5.1 | ||||||
| Fort McIntosh | 13 | 8.4 | |||||||
| Freemansburg | 0 | 8 | 5.1 | 10.1 | 16 | 26.2 | |||
| Greensburg | 30 | ||||||||
| Harrisburg | 23 | 5.6 | |||||||
| Hershey | 6.4 | 14 | |||||||
| Holbrook | 26 | 5.0 | |||||||
| Houston | 19 | 5.3 | 1.1 | 4.1 | 5.3 | ||||
| Johnstown | 0.3 | 0.2 | 15 | 7.6 | 20 | 1.4 | 3.6 | 5.1 | |
| Kittanning | 14 | 7.2 | |||||||
| Kutztown | 16 | ||||||||
| Lancaster | 15 | 6.1 | 12 | ||||||
| Lancaster Downwind | 16 | 2.1 | |||||||
| Lebanon | 21 | 6.3 | |||||||
| Marcus Hook | 3.7 | ||||||||
| Methodist Hill | 27 | ||||||||
| Montoursville | 19 | ||||||||
| Moshannon | 35 | 5.7 | |||||||
| New Garden - Airport | 17 | 3.8 | 2.2 | ||||||
| New Milford | 4.8 | ||||||||
| Norristown | 15 | 4.6 | |||||||
| Peckville | 22 | ||||||||
| Reading Airport | 1.4 | 22 | 5.9 | ||||||
| Salladasburg | 3.6 | ||||||||
| Scranton | 0.3 | 0.2 | 22 | 6.9 | 16 | 2.7 | 6.8 | 9.6 | |
| State College | 0.3 | 23 | 6.0 | 3.5 | 3.2 | 6.7 | |||
| Strongstown | 0.6 | 33 | 6.5 | ||||||
| Swiftwater | 27 | 5.5 | |||||||
| Tioga County | 46 | 5.9 | |||||||
| Towanda | 13 | 6.4 | 3 | 4.4 | 7.8 | ||||
| Tunkhannock | 4.9 | ||||||||
| Uniontown | 32 | 5.5 | 1.2 | 4.5 | 5.8 | ||||
| Warren - Overlook | 3.1 | 28 | 5.4 | ||||||
| Warren East | 0.6 | ||||||||
| York | 0.5 | 16 | 6.7 | 1.9 | 3.8 | 5.7 | |||
| York Downwind | 14 |
| Site Name | 1-Hr SWS (mph) | 1-Hr VWS (mph) | 1-Hr VWD (degs) | 1-Hr AT (degF) | 1-Hr SR (w/m2) |
|---|---|---|---|---|---|
| Allentown | 2.1 | 1.9 | 84 | 72 | 202 |
| Altoona | 1.9 | 1.5 | 59 | 72 | 323 |
| Arendtsville | 5.3 | 5.2 | 349 | 70 | 124 |
| Beaver Falls | 1.6 | 1.2 | 215 | 75 | 239 |
| Brighton Township | 2.8 | 2.4 | 138 | 74 | 239 |
| Bristol | 2.2 | 1.5 | 73 | 73 | 44 |
| Carlisle | 2.1 | 1.8 | 71 | 71 | 139 |
| Chambersburg | 258 | ||||
| Charleroi | 1.5 | 1.2 | 3 | 74 | 143 |
| Chester | 3.3 | 2.9 | 89 | 74 | 122 |
| Erie | 3.2 | 2.8 | 193 | 78 | 469 |
| Farrell | 4.9 | 4.4 | 161 | 75 | 491 |
| Florence | 2.6 | 2.3 | 134 | 74 | 306 |
| Fort McIntosh | 2.4 | 1.9 | 46 | 75 | 339 |
| Freemansburg | 2.0 | 1.6 | 89 | 72 | 146 |
| Greensburg | 2.2 | 2.0 | 6 | 71 | 206 |
| Harrisburg | 0.9 | 0.8 | 106 | 73 | 146 |
| Hershey | 4.8 | 4.5 | 70 | 73 | 147 |
| Holbrook | 1.8 | 1.6 | 138 | 76 | 279 |
| Houston | 1.9 | 1.6 | 149 | 75 | 180 |
| Johnstown | 1.2 | 0.9 | 181 | 71 | 177 |
| Kittanning | 1.7 | 0.5 | 190 | 69 | 33 |
| Kutztown | 5.6 | 5.4 | 55 | 72 | 224 |
| Lancaster | 1.6 | 1.3 | 96 | 73 | 171 |
| Lancaster Downwind | |||||
| Lebanon | 3.9 | 3.6 | 68 | 73 | 190 |
| Marcus Hook | |||||
| Methodist Hill | |||||
| Montoursville | 2.7 | 2.2 | 162 | 72 | 504 |
| Moshannon | |||||
| New Garden - Airport | 4.7 | 4.5 | 78 | 72 | 135 |
| New Milford | 2.7 | 2.3 | 166 | 70 | 218 |
| Norristown | 2.3 | 1.9 | 91 | 73 | 127 |
| Peckville | 1.4 | 1.0 | 109 | 72 | 308 |
| Reading Airport | 3.4 | 2.1 | 65 | 74 | 231 |
| Salladasburg | 1.6 | 1.0 | 115 | 76 | 466 |
| Scranton | 1.1 | 0.9 | 39 | 73 | 301 |
| State College | 2.5 | 2.0 | 52 | 73 | 554 |
| Strongstown | 5.7 | 5.4 | 142 | 71 | 216 |
| Swiftwater | 1.1 | 1.0 | 201 | 73 | 289 |
| Tioga County | 5.3 | 4.8 | 180 | 67 | 468 |
| Towanda | 1.7 | 1.5 | 36 | 70 | 436 |
| Tunkhannock | 4.3 | 4.1 | 123 | 68 | 249 |
| Uniontown | |||||
| Warren - Overlook | 0.5 | 0.1 | 350 | 72 | 27 |
| Warren East | 4.4 | 3.9 | 81 | 74 | 625 |
| York | 4.3 | 4.1 | 76 | 71 | 158 |
| York Downwind | 3.2 | 3.0 | 90 | 70 | 119 |
For data comparision purposes, see the National Ambient Air Quality Standards on the EPA web site.
Weather Measurement Definitions
Site Locations by County