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 6/9/2026 2:00:00 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 | 25 | 2.7 | 7 | ||||||
| Altoona | 0.3 | 29 | 4.8 | ||||||
| Arendtsville | 0.1 | 0.5 | 32 | 2.5 | 0.7 | 2.9 | 3.6 | ||
| Beaver Falls | 16 | 7.7 | 13 | 4.4 | 13.8 | 18.3 | |||
| Brighton Township | 0.4 | 33 | |||||||
| Bristol | 21 | ||||||||
| Carlisle | 3.4 | ||||||||
| Chambersburg | 3.6 | ||||||||
| Charleroi | 0.2 | 25 | 5.1 | 0 | 3.8 | 3.8 | |||
| Chester | 21 | 3.4 | 0.6 | 8.2 | 8.9 | ||||
| Erie | 0.0 | 38 | 5.5 | 11 | |||||
| Farrell | 36 | 6.5 | |||||||
| Florence | 0.3 | 16 | 5.8 | ||||||
| Fort McIntosh | 9 | 8.0 | |||||||
| Freemansburg | 1.4 | 19 | 2.9 | ||||||
| Greensburg | 39 | 7.4 | |||||||
| Harrisburg | 31 | 2.1 | |||||||
| Hershey | 33 | 2.5 | 7 | ||||||
| Holbrook | 35 | 8.8 | |||||||
| Houston | 10 | 6.5 | 0.2 | 1.5 | 1.7 | ||||
| Johnstown | 0.1 | 0 | 20 | 7.6 | 13 | 0 | 2.7 | 2.7 | |
| Kittanning | 26 | 8.6 | |||||||
| Kutztown | 6 | ||||||||
| Lancaster | 28 | 2.4 | 6 | ||||||
| Lancaster Downwind | 29 | 1.5 | |||||||
| Lebanon | 31 | 2.4 | |||||||
| Marcus Hook | 2.9 | ||||||||
| Montoursville | 12 | ||||||||
| Moshannon | 40 | 6.3 | |||||||
| New Garden - Airport | 26 | 3.0 | 4.9 | ||||||
| New Milford | 5.4 | ||||||||
| Norristown | 25 | 2.9 | |||||||
| Peckville | 8 | ||||||||
| Reading Airport | 0.6 | 17 | 3.0 | ||||||
| Scranton | 0.3 | 0 | 1 | 6.3 | 11 | 21.3 | 17.2 | 38.6 | |
| State College | 0.1 | 36 | 6.6 | 1.3 | 1.4 | 2.8 | |||
| Strongstown | 0.4 | 38 | 6.7 | ||||||
| Swiftwater | 16 | 4.3 | |||||||
| Tioga County | 34 | 7.6 | |||||||
| Towanda | 33 | 5.8 | 0 | 2.1 | 2.1 | ||||
| Tunkhannock | 4.5 | ||||||||
| Uniontown | 22 | 7.2 | 0.4 | 3.5 | 3.9 | ||||
| Warren - Overlook | 1.2 | 30 | 6.9 | ||||||
| Warren East | 1.4 | ||||||||
| York | 0.5 | 32 | 2.6 | 0.4 | 2.5 | 3 | |||
| York Downwind | 25 |
| Site Name | 1-Hr SWS (mph) | 1-Hr VWS (mph) | 1-Hr VWD (degs) | 1-Hr AT (degF) | 1-Hr SR (w/m2) |
|---|---|---|---|---|---|
| Allentown | 4.4 | 4.3 | 210 | 59 | 0 |
| Altoona | 0.0 | 0.0 | 0 | 177 | 0 |
| Arendtsville | 9.2 | 9.1 | 166 | 63 | 0 |
| Beaver Falls | 0.9 | 0.7 | 86 | 69 | 0 |
| Brighton Township | 2.2 | 2.0 | 115 | 71 | 0 |
| Bristol | 2.6 | 2.5 | 227 | 57 | 0 |
| Carlisle | 0.9 | 0.4 | 159 | 63 | 0 |
| Chambersburg | 0 | ||||
| Charleroi | 1.1 | 0.8 | 273 | 69 | 0 |
| Chester | 4.3 | 3.8 | 219 | 59 | 0 |
| Erie | 6.5 | 5.9 | 161 | 72 | 0 |
| Farrell | 4.3 | 4.0 | 134 | 70 | 0 |
| Florence | 1.2 | 0.9 | 125 | 68 | 0 |
| Fort McIntosh | 1.0 | 0.5 | 61 | 70 | 0 |
| Freemansburg | 1.6 | 1.5 | 180 | 58 | 0 |
| Greensburg | 2.2 | 2.0 | 132 | 69 | 0 |
| Harrisburg | 1.7 | 1.6 | 183 | 65 | 0 |
| Hershey | 2.6 | 2.2 | 158 | 63 | 0 |
| Holbrook | 1.7 | 1.6 | 150 | 71 | 0 |
| Houston | 0.5 | 0.3 | 39 | 66 | 0 |
| Johnstown | 1.8 | 1.8 | 146 | 63 | 0 |
| Kittanning | 0.8 | 0.5 | 84 | 66 | 0 |
| Kutztown | 0.8 | 0.2 | 14 | 54 | 0 |
| Lancaster | 1.6 | 1.2 | 179 | 61 | 0 |
| Lancaster Downwind | |||||
| Lebanon | 1.7 | 1.3 | 212 | 61 | 0 |
| Marcus Hook | |||||
| Montoursville | 2.1 | 1.7 | 25 | 58 | 0 |
| Moshannon | |||||
| New Garden - Airport | 3.3 | 3.1 | 221 | 55 | 0 |
| New Milford | 2.6 | 2.0 | 190 | 57 | 0 |
| Norristown | 3.0 | 2.8 | 187 | 58 | 0 |
| Peckville | 1.4 | 1.2 | 77 | 53 | 0 |
| Reading Airport | 1.6 | 0.8 | 226 | 58 | 0 |
| Scranton | 0.3 | 0.2 | 79 | 52 | 0 |
| State College | 2.4 | 2.0 | 227 | 64 | 0 |
| Strongstown | 7.0 | 6.8 | 140 | 63 | 0 |
| Swiftwater | 0.7 | 0.4 | 216 | 50 | 0 |
| Tioga County | 3.4 | 3.0 | 174 | 54 | 0 |
| Towanda | 4.1 | 3.5 | 162 | 64 | 0 |
| Tunkhannock | 4.1 | 4.0 | 144 | 58 | 0 |
| Uniontown | |||||
| Warren - Overlook | 1.7 | 1.5 | 9 | 65 | 0 |
| Warren East | 2.0 | 1.9 | 106 | 63 | 0 |
| York | 2.9 | 2.5 | 214 | 62 | 0 |
| York Downwind | 4.4 | 4.3 | 202 | 56 | 0 |
For data comparision purposes, see the National Ambient Air Quality Standards on the EPA web site.
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