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 2/20/2026 5:00:00 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 | 17 | 3.7 | 4 | ||||||
| Altoona | 0.4 | 45 | 2.9 | ||||||
| Arendtsville | 0.2 | 0.7 | 21 | 6.6 | 1.4 | 5.9 | 7.3 | ||
| Beaver Falls | 32 | 4.2 | 9 | 1.5 | 2.5 | 4.1 | |||
| Brighton Township | 0 | 33 | |||||||
| Bristol | 28 | ||||||||
| Carlisle | 10.6 | ||||||||
| Charleroi | 0.3 | 42 | 2.4 | 0 | 1.4 | 1.4 | |||
| Chester | 4 | 7.0 | 6.3 | 31.3 | 37.7 | ||||
| Erie | 0.2 | 23 | 4.4 | 8 | 0.2 | 3.1 | 3.3 | ||
| Farrell | 17 | 3.7 | |||||||
| Florence | 0 | 36 | 3.0 | ||||||
| Fort McIntosh | 33 | 3.4 | |||||||
| Freemansburg | 0 | 23 | 2.7 | ||||||
| Greensburg | 44 | 2.5 | |||||||
| Harrisburg | 12 | 7.2 | |||||||
| Hershey | 13 | 6.3 | 8 | ||||||
| Holbrook | 47 | 2.2 | |||||||
| Houston | 40 | 2.9 | 0.2 | 1.7 | 2 | ||||
| Johnstown | 0.1 | 0.6 | 46 | 2.1 | 9 | 0 | 1.5 | 1.6 | |
| Kittanning | 39 | 2.8 | |||||||
| Kutztown | 10 | ||||||||
| Lancaster | 11 | 9.8 | 15 | ||||||
| Lancaster Downwind | 14 | 6.9 | |||||||
| Lebanon | 13 | 5.9 | |||||||
| Marcus Hook | 8.0 | ||||||||
| Methodist Hill | 32 | ||||||||
| Montoursville | 28 | ||||||||
| New Garden - Airport | 15 | 5.5 | 1.5 | ||||||
| New Milford | 0.9 | ||||||||
| Norristown | 23 | 4.9 | |||||||
| Peckville | 25 | ||||||||
| Reading Airport | 2.8 | 8 | 6.2 | ||||||
| Salladasburg | 4.3 | ||||||||
| Scranton | 0.3 | 0 | 1.6 | 3 | 0.5 | 11.2 | 11.8 | ||
| State College | 0.4 | 26 | 6.0 | 0.9 | 5.9 | 6.8 | |||
| Strongstown | 0.7 | 45 | 2.2 | ||||||
| Swiftwater | 29 | 1.5 | |||||||
| Tioga County | 32 | 1.0 | |||||||
| Towanda | 33 | 0 | 4.7 | 4.6 | |||||
| Tunkhannock | 1.0 | ||||||||
| Uniontown | 46 | 2.2 | 0.8 | 2.1 | 3 | ||||
| Warren - Overlook | 0.2 | 30 | 6.1 | ||||||
| Warren East | 4.2 | ||||||||
| York | 1.5 | 9 | 16.6 | 1.6 | 22.6 | 24.3 | |||
| York Downwind | 25 |
| Site Name | 1-Hr SWS (mph) | 1-Hr VWS (mph) | 1-Hr VWD (degs) | 1-Hr AT (degF) | 1-Hr SR (w/m2) |
|---|---|---|---|---|---|
| Allentown | 5.2 | 4.5 | 109 | 37 | 0 |
| Altoona | 10.7 | 10.0 | 284 | 57 | 29 |
| Arendtsville | 1.9 | 1.1 | 359 | 41 | 0 |
| Beaver Falls | 7.2 | 6.3 | 275 | 46 | 10 |
| Brighton Township | 6.4 | 6.4 | 4 | 5 | |
| Bristol | 4.8 | 4.5 | 64 | 40 | 0 |
| Carlisle | 1.3 | 1.0 | 113 | 39 | 0 |
| Charleroi | 8.9 | 7.5 | 299 | 55 | 30 |
| Chester | 3.0 | 2.0 | 47 | 43 | 0 |
| Erie | 12.6 | 12.4 | 243 | 35 | 0 |
| Farrell | 17.6 | 17.2 | 251 | 38 | |
| Florence | 12.5 | 11.6 | 258 | 47 | 49 |
| Fort McIntosh | 10.2 | 9.5 | 253 | 47 | 29 |
| Freemansburg | 4.3 | 4.1 | 64 | 38 | 0 |
| Greensburg | 13.6 | 12.8 | 270 | 53 | 46 |
| Harrisburg | 1.7 | 1.6 | 59 | 39 | 0 |
| Hershey | 3.9 | 3.7 | 74 | 39 | 0 |
| Holbrook | 17.9 | 17.3 | 267 | 55 | 59 |
| Houston | 7.2 | 5.7 | 286 | 50 | 9 |
| Johnstown | 4.8 | 3.5 | 82 | 56 | 0 |
| Kittanning | 10.7 | 9.8 | 266 | 49 | 2 |
| Kutztown | 4.0 | 3.9 | 47 | 37 | 0 |
| Lancaster | 1.9 | 1.6 | 70 | 42 | 0 |
| Lancaster Downwind | |||||
| Lebanon | 2.4 | 1.8 | 57 | 38 | 0 |
| Marcus Hook | |||||
| Methodist Hill | |||||
| Montoursville | 3.4 | 2.9 | 136 | 42 | 0 |
| New Garden - Airport | 3.1 | 2.5 | 26 | 44 | 0 |
| New Milford | 1.5 | 0.6 | 147 | 36 | 0 |
| Norristown | 2.5 | 2.1 | 87 | 41 | 0 |
| Peckville | 0.7 | 0.7 | 4 | 0 | |
| Reading Airport | 3.5 | 3.3 | 4 | 38 | 0 |
| Salladasburg | 1.8 | 1.5 | 336 | 42 | 0 |
| Scranton | 2.4 | 1.6 | 164 | 39 | 4 |
| State College | 2.6 | 2.3 | 227 | 42 | 2 |
| Strongstown | 10.7 | 9.8 | 272 | 50 | 10 |
| Swiftwater | 1.5 | 1.1 | 35 | 35 | 0 |
| Tioga County | 4.4 | 2.9 | 193 | 34 | 0 |
| Towanda | 3.6 | 2.6 | 252 | 44 | 0 |
| Tunkhannock | 8.3 | 8.2 | 146 | 39 | 0 |
| Uniontown | |||||
| Warren - Overlook | 5.3 | 4.6 | 297 | 40 | 0 |
| Warren East | 7.7 | 6.5 | 290 | 44 | 0 |
| York | 1.5 | 1.2 | 34 | 41 | 0 |
| York Downwind | 1.6 | 1.2 | 251 | 42 | 0 |
For data comparision purposes, see the National Ambient Air Quality Standards on the EPA web site.
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