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 9/24/2025 4:00:00 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 | 26 | 6.6 | 13 | ||||||
| Altoona | 0 | 21 | 6.5 | ||||||
| Arendtsville | 0.2 | 0.3 | 26 | 6.9 | 0.6 | 3.6 | 4.3 | ||
| Beaver Falls | 35 | 4.7 | 7 | 0.5 | 4.1 | 4.6 | |||
| Brighton Township | 0 | 38 | |||||||
| Bristol | 36 | ||||||||
| Carlisle | 15.7 | ||||||||
| Charleroi | 0.1 | 24 | 4.8 | 1.2 | 2.7 | 4 | |||
| Chester | 30 | 8.2 | 57 | 1.2 | 4.7 | 5.9 | |||
| Erie | 0.2 | 26 | 3.4 | 7 | 0.8 | 10.1 | 11 | ||
| Farrell | 40 | 4.2 | |||||||
| Florence | 0 | 34 | 3.0 | ||||||
| Fort McIntosh | 36 | 4.5 | |||||||
| Freemansburg | 1.1 | 31 | 7.0 | 0.8 | 6.8 | 7.6 | |||
| Greensburg | 28 | 7.1 | |||||||
| Harrisburg | 23 | 13.5 | |||||||
| Hershey | 28 | 9.4 | 18 | ||||||
| Holbrook | 34 | 4.8 | |||||||
| Houston | 27 | 4.7 | 0.8 | 2 | 2.9 | ||||
| Johnstown | 0.1 | 0.1 | 22 | 6.7 | 12 | 0.3 | 4.5 | 4.9 | |
| Kittanning | 32 | 4.1 | |||||||
| Kutztown | 34 | ||||||||
| Lancaster | 26 | 8.3 | 13 | ||||||
| Lancaster Downwind | 26 | 9.8 | |||||||
| Lebanon | 25 | 13.1 | |||||||
| Marcus Hook | 7.6 | ||||||||
| Methodist Hill | 33 | ||||||||
| Montoursville | 35 | ||||||||
| New Garden - Airport | 29 | 9.8 | |||||||
| New Milford | 5.5 | ||||||||
| Norristown | 29 | 9.6 | |||||||
| Peckville | 38 | ||||||||
| Reading Airport | 0.9 | 30 | 7.7 | ||||||
| Salladasburg | 6.2 | ||||||||
| Scranton | 0.3 | 0 | 28 | 6.5 | 10 | 1.3 | 8.3 | 9.7 | |
| State College | 0.3 | 27 | 8.4 | 0.4 | 3.1 | 3.6 | |||
| Strongstown | 0 | 27 | 5.1 | ||||||
| Swiftwater | 30 | 14.1 | |||||||
| Tioga County | 36 | 4.4 | 0 | 1 | 0.7 | ||||
| Towanda | 34 | 4.5 | 0 | 1.8 | 2.6 | ||||
| Tunkhannock | 4.8 | ||||||||
| Uniontown | 24 | 5.7 | 2.1 | 6 | 8.2 | ||||
| Warren - Overlook | 0 | 29 | 3.3 | ||||||
| Warren East | 0 | ||||||||
| York | 9.3 | ||||||||
| York Downwind | 28 |
| Site Name | 1-Hr SWS (mph) | 1-Hr VWS (mph) | 1-Hr VWD (degs) | 1-Hr AT (degF) | 1-Hr SR (w/m2) |
|---|---|---|---|---|---|
| Allentown | 1.5 | 1.4 | 171 | 73 | 19 |
| Altoona | 0.7 | 0.4 | 293 | 67 | 22 |
| Arendtsville | 4.2 | 3.9 | 101 | 68 | 4 |
| Beaver Falls | 1.1 | 0.5 | 250 | 65 | 0 |
| Brighton Township | 3.9 | 3.4 | 44 | 63 | 3 |
| Bristol | 4.4 | 4.0 | 185 | 74 | |
| Carlisle | 1.6 | 1.5 | 112 | 69 | 18 |
| Charleroi | 5.8 | 5.6 | 179 | 71 | 76 |
| Chester | 4.0 | 3.8 | 114 | 72 | 34 |
| Erie | 2.4 | 1.6 | 40 | 66 | 13 |
| Farrell | 3.6 | 3.4 | 88 | 66 | |
| Florence | 1.7 | 1.2 | 327 | 67 | 152 |
| Fort McIntosh | 2.6 | 1.1 | 340 | 65 | 8 |
| Freemansburg | 1.0 | 1.0 | 151 | 76 | 18 |
| Greensburg | 5.2 | 5.0 | 173 | 69 | 45 |
| Harrisburg | 1.1 | 1.0 | 144 | 70 | 7 |
| Hershey | 2.8 | 2.5 | 106 | 71 | 18 |
| Holbrook | 2.4 | 1.7 | 201 | 70 | 55 |
| Houston | 2.1 | 1.4 | 210 | 70 | 151 |
| Johnstown | 1.2 | 0.9 | 300 | 68 | 6 |
| Kittanning | 3.2 | 1.4 | 1 | 65 | 0 |
| Kutztown | 2.4 | 2.0 | 117 | 74 | 5 |
| Lancaster | 2.9 | 2.8 | 123 | 71 | 4 |
| Lancaster Downwind | |||||
| Lebanon | 2.5 | 2.3 | 132 | 72 | 29 |
| Marcus Hook | |||||
| Methodist Hill | |||||
| Montoursville | 3.8 | 3.4 | 106 | 74 | 70 |
| New Garden - Airport | 4.5 | 4.4 | 101 | 71 | 34 |
| New Milford | 5.1 | 4.5 | 206 | 72 | 86 |
| Norristown | 4.6 | 4.4 | 142 | 73 | 1 |
| Peckville | 3.3 | 3.0 | 184 | 75 | 65 |
| Reading Airport | 4.0 | 3.8 | 142 | 74 | 2 |
| Salladasburg | 1.4 | 0.7 | 241 | 74 | 51 |
| Scranton | 2.7 | 2.4 | 173 | 75 | 85 |
| State College | 3.7 | 3.5 | 94 | 67 | 0 |
| Strongstown | 4.8 | 4.6 | 147 | 64 | 10 |
| Swiftwater | 1.2 | 0.6 | 190 | 71 | 42 |
| Tioga County | 3.1 | 2.7 | 152 | 65 | 95 |
| Towanda | 3.9 | 3.6 | 167 | 74 | 58 |
| Tunkhannock | 4.5 | 3.9 | 166 | 72 | 81 |
| Uniontown | |||||
| Warren - Overlook | 1.6 | 1.3 | 6 | 66 | 29 |
| Warren East | 2.5 | 2.0 | 101 | 67 | 29 |
| York | 2.3 | 1.8 | 47 | 70 | 1 |
| York Downwind | 5.1 | 5.0 | 143 | 68 | 12 |
For data comparision purposes, see the National Ambient Air Quality Standards on the EPA web site.
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