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 4/5/2026 4:00:00 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 | 27 | 2.7 | 0 | ||||||
| Altoona | 0.4 | 34 | 2.4 | ||||||
| Arendtsville | 0.1 | 24 | 18.1 | 0.9 | 2.5 | 3.5 | |||
| Beaver Falls | 29 | 3.2 | 4 | 1.7 | 1.5 | 3.2 | |||
| Brighton Township | 0.7 | 27 | |||||||
| Bristol | 24 | ||||||||
| Carlisle | 8.8 | ||||||||
| Charleroi | 0.2 | 38 | 1.5 | 0 | 0.8 | 0.6 | |||
| Chester | 16 | 14.3 | 2.3 | 10.1 | 12.4 | ||||
| Erie | 0.0 | 5.8 | 9 | 0 | 2.5 | 2.4 | |||
| Farrell | 28 | 2.5 | |||||||
| Florence | 0 | 28 | 1.6 | ||||||
| Fort McIntosh | 29 | 2.3 | |||||||
| Freemansburg | 0 | 26 | 3.2 | ||||||
| Greensburg | 37 | 1.5 | |||||||
| Harrisburg | 18 | 6.0 | |||||||
| Hershey | 21 | 4.8 | 7 | ||||||
| Holbrook | 32 | 1.2 | |||||||
| Houston | 31 | 1.6 | 0 | 1.6 | 1.6 | ||||
| Johnstown | 0.0 | 0.5 | 41 | 0.7 | 2 | ||||
| Kittanning | 33 | 1.0 | |||||||
| Kutztown | 27 | ||||||||
| Lancaster | 18 | 8.7 | 16 | ||||||
| Lancaster Downwind | 18 | 5.5 | |||||||
| Lebanon | 22 | 4.2 | |||||||
| Marcus Hook | 11.7 | ||||||||
| Methodist Hill | 34 | ||||||||
| Montoursville | 27 | ||||||||
| Moshannon | 43 | 0.5 | |||||||
| New Garden - Airport | 19 | 8.0 | 1.2 | ||||||
| New Milford | 3.9 | ||||||||
| Norristown | 24 | 6.1 | |||||||
| Peckville | 27 | ||||||||
| Reading Airport | 0.1 | 23 | 3.5 | ||||||
| Salladasburg | 7.8 | ||||||||
| Scranton | 0.2 | 0 | 26 | 3.6 | 6 | ||||
| State College | 0.1 | 31 | 10.1 | 0.6 | 2.3 | 3 | |||
| Strongstown | 0.7 | 40 | 0.9 | ||||||
| Swiftwater | 26 | 1.9 | |||||||
| Tioga County | 28 | 2.3 | |||||||
| Tunkhannock | 3.6 | ||||||||
| Uniontown | 36 | 1.1 | 0 | 1 | 1.1 | ||||
| Warren - Overlook | 0.4 | 25 | 3.0 | ||||||
| Warren East | 4.2 | ||||||||
| York | 0.1 | 20 | 15.9 | 0 | 2.5 | 2.2 | |||
| York Downwind | 21 |
| Site Name | 1-Hr SWS (mph) | 1-Hr VWS (mph) | 1-Hr VWD (degs) | 1-Hr AT (degF) | 1-Hr SR (w/m2) |
|---|---|---|---|---|---|
| Allentown | 5.0 | 4.6 | 96 | 41 | 0 |
| Altoona | 5.5 | 4.0 | 301 | 63 | 0 |
| Arendtsville | 1.3 | 1.0 | 158 | 54 | 0 |
| Beaver Falls | 5.2 | 4.6 | 278 | 49 | 0 |
| Brighton Township | 9.1 | 8.7 | 281 | 46 | 0 |
| Bristol | 4.1 | 3.9 | 76 | 45 | 0 |
| Carlisle | 5.3 | 5.1 | 74 | 46 | 0 |
| Charleroi | 4.4 | 3.6 | 314 | 53 | 0 |
| Chester | 2.9 | 2.2 | 58 | 49 | 0 |
| Erie | 8.4 | 8.3 | 242 | 43 | 0 |
| Farrell | 11.4 | 11.2 | 258 | 46 | |
| Florence | 5.9 | 5.2 | 267 | 49 | 0 |
| Fort McIntosh | 5.9 | 5.3 | 253 | 49 | 0 |
| Freemansburg | 3.4 | 2.8 | 67 | 42 | 0 |
| Greensburg | 5.3 | 4.9 | 280 | 50 | 0 |
| Harrisburg | 1.8 | 1.7 | 94 | 47 | 0 |
| Hershey | 8.1 | 8.0 | 69 | 45 | 0 |
| Holbrook | 12.0 | 11.7 | 277 | 49 | 0 |
| Houston | 3.6 | 2.9 | 297 | 50 | 0 |
| Johnstown | 5.8 | 5.4 | 39 | 56 | 0 |
| Kittanning | 4.1 | 3.8 | 267 | 49 | 0 |
| Kutztown | 7.4 | 7.3 | 60 | 41 | 0 |
| Lancaster | 1.9 | 1.7 | 74 | 48 | 0 |
| Lancaster Downwind | |||||
| Lebanon | 5.5 | 5.3 | 84 | 44 | 0 |
| Marcus Hook | |||||
| Methodist Hill | |||||
| Montoursville | 6.3 | 5.7 | 81 | 51 | 0 |
| Moshannon | |||||
| New Garden - Airport | 6.5 | 6.4 | 85 | 48 | 0 |
| New Milford | 7.6 | 7.0 | 159 | 46 | 0 |
| Norristown | 4.0 | 3.7 | 92 | 45 | 0 |
| Peckville | 2.8 | 2.4 | 144 | 48 | 0 |
| Reading Airport | 3.9 | 3.7 | 44 | 44 | 0 |
| Salladasburg | 3.0 | 0.8 | 326 | 53 | 0 |
| Scranton | 4.8 | 4.3 | 145 | 47 | 0 |
| State College | 4.3 | 2.7 | 216 | 57 | 0 |
| Strongstown | 6.1 | 5.9 | 298 | 50 | 0 |
| Swiftwater | 2.0 | 1.6 | 91 | 40 | 0 |
| Tioga County | 8.3 | 7.8 | 182 | 44 | 0 |
| Tunkhannock | 9.8 | 9.6 | 145 | 48 | 0 |
| Uniontown | |||||
| Warren - Overlook | 5.2 | 4.9 | 278 | 48 | 0 |
| Warren East | 6.1 | 5.5 | 277 | 51 | 0 |
| York | 4.2 | 4.1 | 66 | 50 | 0 |
| York Downwind | 4.7 | 4.5 | 159 | 49 | 0 |
For data comparision purposes, see the National Ambient Air Quality Standards on the EPA web site.
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