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 11/9/2025 7:00:00 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 | 5 | 13.6 | 19 | ||||||
| Altoona | 0 | 7 | 7.6 | ||||||
| Arendtsville | 0.2 | 0.6 | 25 | 13.5 | |||||
| Beaver Falls | 2 | 12.2 | 15 | 3.3 | 5.1 | 8.4 | |||
| Brighton Township | 0.6 | 3 | |||||||
| Bristol | 3 | ||||||||
| Carlisle | 17.6 | ||||||||
| Charleroi | 0 | 1 | 17.0 | 12.9 | 8.5 | 21.4 | |||
| Chester | 3 | 17.7 | 20 | 15.3 | 35.3 | ||||
| Erie | 0.1 | 4.9 | 7 | 0 | 2.8 | 2.8 | |||
| Farrell | 3 | 5.3 | |||||||
| Florence | 0 | 2 | 11.4 | ||||||
| Fort McIntosh | 2 | 13.8 | |||||||
| Freemansburg | 0.9 | 1 | 13.0 | 18.5 | 9.5 | 28 | |||
| Greensburg | 2 | 11.9 | |||||||
| Harrisburg | 4 | 20.6 | |||||||
| Holbrook | 25 | 5.2 | |||||||
| Houston | 2 | 14.5 | 2.2 | 5.7 | 7.9 | ||||
| Johnstown | 0.1 | 0.3 | 1 | 9.9 | 17 | 8.4 | 5.6 | 14.1 | |
| Kittanning | 2 | 8.0 | |||||||
| Kutztown | 8 | ||||||||
| Lancaster | 7 | 16.2 | 22 | ||||||
| Lancaster Downwind | 21 | 8.5 | |||||||
| Lebanon | 13 | 17.6 | |||||||
| Marcus Hook | 15.1 | ||||||||
| Methodist Hill | 35 | ||||||||
| Montoursville | 4 | ||||||||
| New Garden - Airport | 19 | 15.7 | |||||||
| New Milford | 4.7 | ||||||||
| Norristown | 19 | 13.7 | |||||||
| Peckville | 4 | ||||||||
| Reading Airport | 1.7 | 7 | 15.8 | ||||||
| Salladasburg | 6.5 | ||||||||
| Scranton | 0.3 | 0 | 14 | 8.6 | 13 | 2.9 | 6.2 | 9.1 | |
| State College | 0.3 | 11 | 9.6 | 1.7 | 4.1 | 5.9 | |||
| Strongstown | 24 | 5.8 | |||||||
| Swiftwater | 8 | 8.4 | |||||||
| Tioga County | 25 | 9.1 | |||||||
| Towanda | 7 | 6.7 | 0 | 2.4 | 3.1 | ||||
| Tunkhannock | 5.2 | ||||||||
| Uniontown | 4 | 7.7 | 2.3 | 3.9 | 6.3 | ||||
| Warren - Overlook | 0 | ||||||||
| Warren East | |||||||||
| York | 1.1 | 6 | 18.1 | 7.2 | 19.4 | 26.6 | |||
| York Downwind | 26 |
| Site Name | 1-Hr SWS (mph) | 1-Hr VWS (mph) | 1-Hr VWD (degs) | 1-Hr AT (degF) | 1-Hr SR (w/m2) |
|---|---|---|---|---|---|
| Allentown | 4.7 | 4.6 | 82 | 47 | 49 |
| Altoona | 1.2 | 1.1 | 73 | 42 | 17 |
| Arendtsville | 1.7 | 0.9 | 286 | 49 | 7 |
| Beaver Falls | 1.0 | 0.8 | 54 | 40 | 8 |
| Brighton Township | 2.4 | 2.3 | 57 | 40 | 7 |
| Bristol | 1.5 | 1.4 | 353 | 48 | |
| Carlisle | 2.9 | 2.8 | 87 | 47 | 9 |
| Charleroi | 2.1 | 1.7 | 244 | 41 | 0 |
| Chester | 3.2 | 3.2 | 343 | 51 | 28 |
| Erie | 4.8 | 4.4 | 50 | 39 | 0 |
| Farrell | 2.9 | 2.7 | 2 | 38 | |
| Florence | 1.6 | 1.3 | 76 | 40 | 28 |
| Fort McIntosh | 2.4 | 2.2 | 51 | 42 | 11 |
| Freemansburg | 2.1 | 2.0 | 71 | 45 | 54 |
| Greensburg | 1.5 | 1.0 | 63 | 38 | 0 |
| Harrisburg | 1.2 | 1.1 | 83 | 48 | 12 |
| Holbrook | 2.8 | 2.7 | 161 | 46 | 0 |
| Houston | 0.6 | 0.4 | 171 | 39 | 0 |
| Johnstown | 1.3 | 0.3 | 143 | 39 | 5 |
| Kittanning | 1.4 | 1.0 | 103 | 40 | 0 |
| Kutztown | 5.3 | 5.2 | 61 | 47 | 72 |
| Lancaster | 1.1 | 0.9 | 46 | 48 | 29 |
| Lancaster Downwind | |||||
| Lebanon | 1.7 | 1.4 | 107 | 48 | 29 |
| Marcus Hook | |||||
| Methodist Hill | |||||
| Montoursville | 1.0 | 0.6 | 47 | 43 | 10 |
| New Garden - Airport | 3.2 | 3.1 | 71 | 51 | 27 |
| New Milford | 1.2 | 0.5 | 315 | 39 | 0 |
| Norristown | 2.8 | 2.7 | 100 | 54 | 100 |
| Peckville | 1.6 | 0.2 | 76 | 44 | 14 |
| Reading Airport | 2.4 | 2.3 | 51 | 47 | 60 |
| Salladasburg | 1.8 | 1.7 | 335 | 41 | 1 |
| Scranton | 4.1 | 3.9 | 139 | 47 | 34 |
| State College | 1.6 | 1.4 | 21 | 43 | 0 |
| Strongstown | 4.2 | 4.1 | 127 | 44 | 3 |
| Swiftwater | 1.0 | 0.7 | 8 | 46 | 34 |
| Tioga County | 1.7 | 1.3 | 137 | 39 | 0 |
| Towanda | 1.2 | 1.0 | 3 | 40 | 0 |
| Tunkhannock | 1.8 | 1.5 | 171 | 39 | 13 |
| Uniontown | |||||
| Warren - Overlook | 1.1 | 0.9 | 55 | 40 | 2 |
| Warren East | 2.1 | 2.0 | 57 | 41 | 3 |
| York | 2.2 | 1.9 | 76 | 49 | 0 |
| York Downwind | 2.6 | 2.3 | 176 | 48 | 16 |
For data comparision purposes, see the National Ambient Air Quality Standards on the EPA web site.
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