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 5/29/2025 12:00:00 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 | 26 | 7.2 | 10 | ||||||
| Altoona | -0.1 | 16 | 4.3 | ||||||
| Arendtsville | 0.1 | 0 | 27 | 3.7 | 0 | 1.9 | 2 | ||
| Beaver Falls | 2 | 4.7 | 10 | ||||||
| Brighton Township | 0.8 | 12 | |||||||
| Bristol | 31 | ||||||||
| Carlisle | 4.6 | ||||||||
| Charleroi | 0 | 6 | 3.2 | ||||||
| Chester | 5.2 | ||||||||
| Erie | 0.1 | 18 | 2.7 | 5 | |||||
| Farrell | 15 | 3.5 | |||||||
| Florence | 0.7 | 10 | 4.2 | ||||||
| Fort McIntosh | 1 | 6.3 | |||||||
| Freemansburg | 0.7 | 25 | 6.1 | 0.6 | 3.9 | 4.5 | |||
| Greensburg | 23 | 3.2 | |||||||
| Harrisburg | 26 | 5.8 | |||||||
| Hershey | 27 | 7.5 | 11 | ||||||
| Holbrook | 16 | 3.3 | |||||||
| Houston | 5 | 3.4 | |||||||
| Johnstown | 0.2 | 26 | 1.7 | 3 | 0 | 2 | 2 | ||
| Kittanning | 21 | 2.9 | |||||||
| Kutztown | 25 | ||||||||
| Lancaster | 27 | 4.8 | 8 | ||||||
| Lancaster Downwind | 29 | 4.2 | |||||||
| Lebanon | 26 | 9.1 | |||||||
| Marcus Hook | 0.6 | ||||||||
| Methodist Hill | 27 | ||||||||
| Montoursville | 32 | ||||||||
| New Garden - Airport | 30 | 2.1 | |||||||
| New Milford | 2.1 | ||||||||
| Norristown | 19 | 2.7 | |||||||
| Peckville | 33 | ||||||||
| Reading Airport | 1.5 | 23 | 9.2 | ||||||
| Salladasburg | 3.3 | ||||||||
| Scranton | 0.1 | 0 | 26 | 3.4 | 7 | 0.5 | 4.7 | 5.3 | |
| State College | 1.5 | 13 | 2.7 | 0.7 | 2 | 2.7 | |||
| Strongstown | 0 | 27 | 1.4 | ||||||
| Swiftwater | 31 | ||||||||
| Tioga County | 36 | 0.3 | 0.2 | 0.2 | 0.5 | ||||
| Towanda | 26 | 3.0 | 0 | 1.2 | 1.3 | ||||
| Tunkhannock | 2.5 | ||||||||
| Uniontown | 7 | 3.7 | |||||||
| Warren - Overlook | 0 | ||||||||
| Warren East | 0.1 | ||||||||
| Wilkes-Barre | |||||||||
| York | 0.3 | 34 | 3.0 | 0 | 2.9 | 2.7 | |||
| York Downwind | 32 |
| Site Name | 1-Hr SWS (mph) | 1-Hr VWS (mph) | 1-Hr VWD (degs) | 1-Hr AT (degF) | 1-Hr SR (w/m2) |
|---|---|---|---|---|---|
| Allentown | 2.6 | 1.9 | 35 | 51 | 0 |
| Altoona | 0.5 | 0.3 | 304 | 54 | 0 |
| Arendtsville | 4.7 | 4.6 | 27 | 53 | 0 |
| Beaver Falls | 1.0 | 0.5 | 263 | 57 | 0 |
| Brighton Township | 1.0 | 0.6 | 219 | 56 | 0 |
| Bristol | 4.5 | 4.2 | 32 | 55 | 0 |
| Carlisle | 3.0 | 2.9 | 78 | 52 | 0 |
| Charleroi | 1.1 | 0.0 | 82 | 58 | 0 |
| Chester | 7.0 | 6.9 | 5 | 56 | 0 |
| Erie | 2.6 | 2.1 | 202 | 57 | 0 |
| Farrell | 3.0 | 2.7 | 139 | 55 | 0 |
| Florence | 1.9 | 1.7 | 209 | 58 | 0 |
| Fort McIntosh | 0.9 | 0.1 | 338 | 57 | 0 |
| Freemansburg | 3.4 | 3.3 | 40 | 53 | 0 |
| Greensburg | 1.6 | 1.3 | 167 | 56 | 0 |
| Harrisburg | 1.3 | 1.1 | 42 | 53 | 0 |
| Hershey | 4.2 | 4.0 | 49 | 52 | 0 |
| Holbrook | 4.1 | 4.0 | 253 | 59 | 0 |
| Houston | 0.8 | 0.2 | 126 | 58 | 0 |
| Johnstown | 2.1 | 1.9 | 152 | 54 | 0 |
| Kittanning | 1.7 | 1.4 | 123 | 54 | 0 |
| Kutztown | 5.1 | 4.9 | 35 | 52 | 0 |
| Lancaster | 1.1 | 0.9 | 19 | 53 | 0 |
| Lancaster Downwind | |||||
| Lebanon | 2.7 | 2.2 | 71 | 52 | 0 |
| Marcus Hook | |||||
| Methodist Hill | |||||
| Montoursville | 3.3 | 3.2 | 80 | 54 | 0 |
| New Garden - Airport | 3.7 | 3.1 | 30 | 53 | 0 |
| New Milford | 2.2 | 1.8 | 106 | 51 | 0 |
| Norristown | 1.8 | 0.8 | 56 | 53 | 0 |
| Peckville | 3.0 | 2.8 | 25 | 52 | 0 |
| Reading Airport | 3.5 | 3.3 | 24 | 53 | 0 |
| Salladasburg | 0.8 | 0.5 | 274 | 55 | 0 |
| Scranton | 1.4 | 1.3 | 27 | 53 | 0 |
| State College | 0.9 | 0.6 | 36 | 53 | 0 |
| Strongstown | 6.6 | 6.4 | 138 | 51 | 0 |
| Swiftwater | 2.0 | 1.9 | 355 | 51 | 0 |
| Tioga County | 4.0 | 3.5 | 154 | 48 | 0 |
| Towanda | 0.9 | 0.8 | 19 | 53 | 0 |
| Tunkhannock | 4.3 | 4.2 | 128 | 51 | 0 |
| Uniontown | |||||
| Warren - Overlook | 1.5 | 1.2 | 337 | 53 | 0 |
| Warren East | 3.0 | 2.4 | 113 | 54 | 0 |
| Wilkes-Barre | 1.1 | 1.0 | 30 | 54 | 0 |
| York | 3.3 | 3.1 | 43 | 52 | 0 |
| York Downwind | 3.7 | 3.6 | 4 | 51 | 0 |
For data comparision purposes, see the National Ambient Air Quality Standards on the EPA web site.
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