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 4/1/2026 11:00:00 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 | 24 | 3.6 | 6 | ||||||
| Altoona | 0.2 | 25 | 1.4 | ||||||
| Arendtsville | 0.2 | 0.3 | 24 | 4.0 | 0.7 | 4.9 | 5.6 | ||
| Beaver Falls | 20 | 3.3 | 5 | 1.8 | 7.3 | 9.2 | |||
| Brighton Township | 0.6 | 23 | |||||||
| Bristol | 30 | ||||||||
| Carlisle | 3.4 | ||||||||
| Charleroi | 0.1 | 14 | 5.6 | 0.5 | 7.5 | 8 | |||
| Chester | 23 | 7.2 | 4 | 14.4 | 18.4 | ||||
| Erie | 0.0 | 3.7 | 5 | 0.2 | 2.8 | 3 | |||
| Farrell | 23 | 4.3 | |||||||
| Florence | 0.1 | 17 | 2.0 | ||||||
| Fort McIntosh | 18 | 2.8 | |||||||
| Freemansburg | 0 | 28 | 3.2 | ||||||
| Greensburg | 20 | 2.8 | |||||||
| Harrisburg | 28 | 3.6 | |||||||
| Hershey | 28 | 4.1 | 7 | ||||||
| Holbrook | 15 | 8.6 | |||||||
| Houston | 16 | 1.9 | 0.1 | 3.6 | 3.7 | ||||
| Johnstown | 0.1 | 0.5 | 18 | 2.8 | 6 | 0 | 3.2 | 3.2 | |
| Kittanning | 19 | 1.0 | |||||||
| Kutztown | 28 | ||||||||
| Lancaster | 30 | 3.2 | 5 | ||||||
| Lancaster Downwind | 28 | 1.9 | |||||||
| Lebanon | 30 | 4.5 | |||||||
| Marcus Hook | 4.8 | ||||||||
| Methodist Hill | 23 | ||||||||
| Montoursville | 29 | ||||||||
| Moshannon | 39 | 0.7 | |||||||
| New Garden - Airport | 31 | 3.3 | 1.4 | ||||||
| New Milford | 2.6 | ||||||||
| Norristown | 27 | 3.3 | |||||||
| Peckville | 30 | ||||||||
| Reading Airport | 0 | 25 | 5.0 | ||||||
| Scranton | 0.2 | 0 | 26 | 3.6 | 7 | ||||
| Strongstown | 0.6 | 20 | 3.1 | ||||||
| Swiftwater | 28 | 3.6 | |||||||
| Tioga County | 1.3 | ||||||||
| Tunkhannock | 4.1 | ||||||||
| Uniontown | 12 | 10.9 | 0 | 7.6 | 7.7 | ||||
| Warren - Overlook | 0.1 | 25 | 0.7 | ||||||
| Warren East | 1.1 | ||||||||
| York | 0.1 | 29 | 4.6 | 0 | 3.1 | 3.1 | |||
| 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 | 6.0 | 5.7 | 61 | 51 | 0 |
| Altoona | 2.4 | 2.1 | 68 | 49 | 0 |
| Arendtsville | 12.8 | 12.2 | 349 | 56 | 0 |
| Beaver Falls | 1.6 | 0.9 | 338 | 47 | 0 |
| Brighton Township | 3.1 | 2.8 | 340 | 45 | 0 |
| Bristol | 9.8 | 9.5 | 72 | 56 | 0 |
| Carlisle | 6.9 | 6.6 | 18 | 51 | 0 |
| Charleroi | 1.3 | 0.7 | 270 | 52 | 0 |
| Chester | 5.7 | 5.1 | 69 | 59 | 0 |
| Erie | 7.3 | 7.0 | 39 | 38 | 0 |
| Farrell | 4.0 | 3.8 | 345 | 40 | |
| Florence | 1.2 | 0.0 | 332 | 47 | 0 |
| Fort McIntosh | 1.7 | 1.2 | 256 | 48 | 0 |
| Freemansburg | 8.1 | 7.9 | 51 | 53 | 0 |
| Greensburg | 2.9 | 2.6 | 55 | 52 | 0 |
| Harrisburg | 2.5 | 2.3 | 47 | 56 | 0 |
| Hershey | 9.6 | 9.3 | 46 | 55 | 0 |
| Holbrook | 3.7 | 2.9 | 67 | 50 | 0 |
| Houston | 1.1 | 0.4 | 129 | 48 | 0 |
| Johnstown | 4.6 | 4.3 | 2 | 57 | 0 |
| Kittanning | 2.7 | 2.1 | 85 | 50 | 0 |
| Kutztown | 11.6 | 11.4 | 51 | 52 | 0 |
| Lancaster | 5.6 | 5.3 | 67 | 57 | 0 |
| Lancaster Downwind | |||||
| Lebanon | 8.1 | 7.8 | 74 | 53 | 0 |
| Marcus Hook | |||||
| Methodist Hill | |||||
| Montoursville | 2.9 | 1.7 | 267 | 42 | 0 |
| Moshannon | |||||
| New Garden - Airport | 14.8 | 14.7 | 83 | 60 | 0 |
| New Milford | 2.2 | 0.9 | 56 | 38 | 0 |
| Norristown | 7.8 | 7.4 | 98 | 58 | 0 |
| Peckville | 3.7 | 3.3 | 17 | 42 | 0 |
| Reading Airport | 10.8 | 10.6 | 45 | 53 | 0 |
| Scranton | 2.3 | 1.7 | 45 | 44 | 0 |
| Strongstown | 6.8 | 6.5 | 89 | 50 | 0 |
| Swiftwater | 4.7 | 3.8 | 30 | 46 | 0 |
| Tioga County | 3.5 | 2.7 | 51 | 33 | 0 |
| Tunkhannock | 1.5 | 0.4 | 217 | 40 | 0 |
| Uniontown | |||||
| Warren - Overlook | 1.5 | 1.4 | 71 | 41 | 0 |
| Warren East | 1.7 | 1.4 | 98 | 43 | 0 |
| York | 5.6 | 5.0 | 63 | 57 | 0 |
| York Downwind | 6.9 | 6.7 | 48 | 56 | 0 |
For data comparision purposes, see the National Ambient Air Quality Standards on the EPA web site.
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