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 6/4/2026 12:00:00 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 | 57 | 6.7 | 38 | ||||||
| Altoona | 0.9 | 62 | 5.2 | ||||||
| Arendtsville | 0.1 | 0.6 | 58 | 5.3 | 0.4 | 1.4 | 1.8 | ||
| Beaver Falls | 73 | 6.7 | 29 | 1.9 | 2.2 | 4.1 | |||
| Brighton Township | 0 | 64 | |||||||
| Bristol | 54 | ||||||||
| Carlisle | 6.1 | ||||||||
| Chambersburg | 60 | 7.7 | |||||||
| Charleroi | 1 | 69 | 5.9 | 0 | 1.8 | 1.8 | |||
| Chester | 52 | 8.2 | 2.6 | 4.6 | 7.2 | ||||
| Erie | 0.1 | 62 | 6.6 | 31 | 0.2 | 4.4 | 4.7 | ||
| Farrell | 66 | 5.6 | |||||||
| Florence | 0.7 | 63 | 7.5 | ||||||
| Fort McIntosh | 67 | 5.8 | |||||||
| Freemansburg | 0.7 | 58 | 6.1 | ||||||
| Greensburg | 69 | 7.0 | |||||||
| Harrisburg | 52 | 6.1 | |||||||
| Hershey | 53 | 5.8 | 17 | ||||||
| Holbrook | 64 | 5.8 | |||||||
| Houston | 63 | 5.4 | 0.2 | 1.4 | 1.7 | ||||
| Johnstown | 0.1 | 0.7 | 66 | 5.7 | 21 | 0 | 1.6 | 1.7 | |
| Kittanning | 65 | 6.9 | |||||||
| Kutztown | 57 | ||||||||
| Lancaster | 6.4 | 18 | |||||||
| Lancaster Downwind | 56 | 4.5 | |||||||
| Lebanon | 51 | 5.8 | |||||||
| Marcus Hook | 6.3 | ||||||||
| Montoursville | 61 | ||||||||
| Moshannon | 65 | 5.1 | |||||||
| New Garden - Airport | 56 | 5.9 | 0.3 | ||||||
| New Milford | 6.3 | ||||||||
| Norristown | 55 | 5.7 | |||||||
| Peckville | 59 | ||||||||
| Reading Airport | 0.8 | 61 | 8.7 | ||||||
| Salladasburg | 5.1 | ||||||||
| Scranton | 0.2 | 0 | 59 | 7.0 | 19 | ||||
| State College | 0.3 | 64 | 6.0 | 1.3 | 1.2 | 2.6 | |||
| Strongstown | 0.7 | 69 | 6.9 | ||||||
| Swiftwater | 58 | 6.2 | |||||||
| Tioga County | 6.9 | ||||||||
| Tunkhannock | 8.1 | ||||||||
| Uniontown | 63 | 5.8 | 0.2 | 2.7 | 3 | ||||
| Warren - Overlook | 0.5 | 57 | 6.4 | ||||||
| Warren East | 4 | ||||||||
| York | 0.5 | 58 | 7.5 | 0.9 | 2.7 | 3.7 | |||
| York Downwind | 52 |
| 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 | 2.3 | 280 | 82 | 930 |
| Altoona | 3.6 | 1.7 | 316 | 83 | 778 |
| Arendtsville | 6.2 | 3.5 | 310 | 82 | 903 |
| Beaver Falls | 3.5 | 2.4 | 244 | 82 | 898 |
| Brighton Township | 4.4 | 3.5 | 281 | 79 | 913 |
| Bristol | 5.8 | 4.8 | 340 | 84 | 935 |
| Carlisle | 5.2 | 4.0 | 308 | 81 | 930 |
| Chambersburg | 932 | ||||
| Charleroi | 4.5 | 3.1 | 229 | 80 | 923 |
| Chester | 4.8 | 1.3 | 5 | 86 | 902 |
| Erie | 2.1 | 1.2 | 271 | 75 | 938 |
| Farrell | 5.2 | 4.2 | 277 | 78 | 931 |
| Florence | 4.0 | 2.3 | 268 | 80 | 894 |
| Fort McIntosh | 5.6 | 5.3 | 220 | 80 | 936 |
| Freemansburg | 4.9 | 3.0 | 275 | 83 | 924 |
| Greensburg | 4.6 | 3.0 | 233 | 78 | 1102 |
| Harrisburg | 1.2 | 0.8 | 327 | 84 | 893 |
| Hershey | 3.9 | 2.6 | 304 | 84 | 1139 |
| Holbrook | 3.5 | 2.0 | 249 | 77 | 959 |
| Houston | 2.3 | 0.8 | 239 | 81 | 915 |
| Johnstown | 3.8 | 3.1 | 37 | 79 | 893 |
| Kittanning | 5.4 | 4.7 | 226 | 79 | 1008 |
| Kutztown | 2.7 | 0.8 | 332 | 84 | 900 |
| Lancaster | 2.8 | 1.3 | 287 | 84 | 1008 |
| Lancaster Downwind | |||||
| Lebanon | 3.3 | 1.7 | 326 | 83 | 921 |
| Marcus Hook | |||||
| Montoursville | 5.0 | 4.5 | 204 | 81 | 927 |
| Moshannon | |||||
| New Garden - Airport | 4.2 | 2.9 | 280 | 84 | 1012 |
| New Milford | 5.6 | 4.5 | 280 | 78 | 926 |
| Norristown | 3.8 | 2.4 | 326 | 84 | 933 |
| Peckville | 4.5 | 3.3 | 302 | 80 | 903 |
| Reading Airport | 4.1 | 1.5 | 298 | 84 | 927 |
| Salladasburg | 3.8 | 2.9 | 189 | 83 | 974 |
| Scranton | 2.6 | 1.9 | 325 | 84 | 798 |
| State College | 4.8 | 3.7 | 298 | 80 | 913 |
| Strongstown | 3.7 | 2.1 | 264 | 76 | 896 |
| Swiftwater | 3.5 | 2.0 | 343 | 80 | 1056 |
| Tioga County | 2.7 | 0.5 | 249 | 74 | 1067 |
| Tunkhannock | 5.4 | 4.0 | 282 | 77 | 980 |
| Uniontown | |||||
| Warren - Overlook | 2.2 | 1.5 | 250 | 80 | 1072 |
| Warren East | 3.6 | 2.2 | 267 | 80 | 1090 |
| York | 5.6 | 4.3 | 347 | 82 | 1035 |
| York Downwind | 3.0 | 2.2 | 288 | 81 | 998 |
For data comparision purposes, see the National Ambient Air Quality Standards on the EPA web site.
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