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 10/4/2026 6:00:00 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 | 3.9 | 8 | ||||||
| Altoona | 0.2 | 6 | 2.9 | ||||||
| Arendtsville | 0.1 | 0 | 21 | 2.8 | 0.8 | 2.2 | 3.1 | ||
| Beaver Falls | 22 | 4.7 | 10 | 0.2 | 8.4 | 8.6 | |||
| Brighton Township | 1 | 40 | |||||||
| Bristol | 19 | ||||||||
| Carlisle | 4.0 | ||||||||
| Chambersburg | 13 | 4.2 | |||||||
| Charleroi | 0.9 | 31 | 3.2 | 0.7 | 2.8 | 3.6 | |||
| Chester | 22 | 3.5 | 0.8 | 5.4 | 6.3 | ||||
| Erie | 0.3 | 27 | 4.8 | 10 | 0.7 | 6.8 | 7.6 | ||
| Farrell | 32 | 5.6 | |||||||
| Florence | 0.1 | 31 | 3.4 | ||||||
| Fort McIntosh | 29 | 5.1 | |||||||
| Freemansburg | 0.5 | 19 | 3.5 | 0 | 4.9 | 4.6 | |||
| Greensburg | 22 | 4.1 | |||||||
| Harrisburg | 18 | 6.2 | |||||||
| Hershey | 17 | 3.5 | 7 | ||||||
| Holbrook | 42 | 3.5 | |||||||
| Houston | 17 | 3.9 | 0.3 | 2.3 | 2.7 | ||||
| Johnstown | 0.2 | 0.5 | 13 | 2.4 | 5 | 0 | 3.9 | 3.9 | |
| Kittanning | 31 | 4.1 | |||||||
| Kutztown | 22 | ||||||||
| Lancaster | 16 | 2.8 | 5 | ||||||
| Lancaster Downwind | 17 | 1.5 | |||||||
| Lebanon | 0 | 4.3 | |||||||
| Marcus Hook | 1.8 | ||||||||
| Methodist Hill | 20 | ||||||||
| Montoursville | 14 | ||||||||
| Moshannon | 15 | 3.5 | |||||||
| New Garden - Airport | 22 | 1.6 | 6.6 | ||||||
| New Milford | 3.9 | ||||||||
| Norristown | 19 | 2.6 | |||||||
| Peckville | 20 | ||||||||
| Reading Airport | 0 | 16 | 4.1 | ||||||
| Salladasburg | 3.6 | ||||||||
| Scranton | 0.2 | 0.2 | 15 | 4.4 | 8 | 1.4 | 7.4 | 8.8 | |
| State College | 0 | 16 | 3.0 | ||||||
| Strongstown | 0.6 | 19 | 2.7 | ||||||
| Swiftwater | 17 | 4.6 | |||||||
| Tioga County | 18 | 2.6 | 0 | 1.8 | 1.4 | ||||
| Towanda | 22 | 2.9 | 0 | 2.2 | 2.1 | ||||
| Tunkhannock | 3.6 | ||||||||
| Uniontown | 25 | 5.0 | 0 | 3 | 3 | ||||
| Warren - Overlook | 0 | 37 | 3.4 | ||||||
| Warren East | 0.6 | ||||||||
| York | 1 | 20 | 3.2 | 0.8 | 1.6 | 2.4 | |||
| York Downwind | 19 |
| 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 | 81 | 55 | 0 |
| Altoona | 0.4 | 0.3 | 103 | 59 | 0 |
| Arendtsville | 2.2 | 2.0 | 122 | 59 | 0 |
| Beaver Falls | 1.1 | 0.6 | 146 | 61 | 0 |
| Brighton Township | 3.4 | 3.4 | 274 | 63 | 0 |
| Bristol | 3.1 | 2.9 | 24 | 57 | 0 |
| Carlisle | 1.4 | 1.1 | 41 | 57 | 0 |
| Chambersburg | |||||
| Charleroi | 3.4 | 3.1 | 260 | 62 | 0 |
| Chester | 5.7 | 5.5 | 8 | 59 | 0 |
| Erie | 2.0 | 1.7 | 201 | 60 | 0 |
| Farrell | 1.7 | 1.6 | 232 | 63 | 0 |
| Florence | 0.6 | 0.2 | 267 | 59 | 0 |
| Fort McIntosh | 2.4 | 2.2 | 242 | 63 | 0 |
| Freemansburg | 1.7 | 1.3 | 68 | 57 | 0 |
| Greensburg | 1.1 | 1.1 | 4 | 0 | |
| Harrisburg | 0.7 | 0.6 | 136 | 58 | 0 |
| Hershey | 3.3 | 3.2 | 86 | 58 | 0 |
| Holbrook | 4.1 | 4.0 | 273 | 65 | 0 |
| Houston | 0.9 | 0.8 | 33 | 57 | 0 |
| Johnstown | 0.8 | 0.3 | 69 | 61 | 0 |
| Kittanning | 0.8 | 0.6 | 258 | 60 | 0 |
| Kutztown | 4.6 | 4.4 | 59 | 56 | 0 |
| Lancaster | 1.1 | 0.7 | 62 | 59 | 0 |
| Lancaster Downwind | |||||
| Lebanon | 3.0 | 2.7 | 85 | 57 | 0 |
| Marcus Hook | |||||
| Methodist Hill | |||||
| Montoursville | 2.0 | 1.8 | 81 | 57 | 0 |
| Moshannon | |||||
| New Garden - Airport | 4.1 | 3.9 | 55 | 58 | 0 |
| New Milford | 1.7 | 1.1 | 152 | 54 | 0 |
| Norristown | 1.9 | 1.3 | 45 | 57 | 0 |
| Peckville | 1.5 | 1.3 | 212 | 58 | 0 |
| Reading Airport | 2.0 | 1.8 | 26 | 58 | 0 |
| Salladasburg | 0.9 | 0.7 | 317 | 59 | 0 |
| Scranton | 2.2 | 2.0 | 168 | 57 | 0 |
| State College | 1.2 | 1.1 | 183 | 58 | 0 |
| Strongstown | 1.3 | 1.1 | 225 | 58 | 0 |
| Swiftwater | 1.2 | 0.8 | 96 | 54 | 0 |
| Tioga County | 2.1 | 1.6 | 141 | 50 | 0 |
| Towanda | |||||
| Tunkhannock | 2.5 | 2.3 | 142 | 56 | 0 |
| Uniontown | |||||
| Warren - Overlook | 0.4 | 0.3 | 257 | 58 | 0 |
| Warren East | 1.4 | 1.1 | 124 | 59 | 0 |
| York | 2.4 | 2.2 | 64 | 59 | 0 |
| York Downwind | 2.2 | 1.8 | 80 | 57 | 0 |
For data comparision purposes, see the National Ambient Air Quality Standards on the EPA web site.
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