| October 31, 2012 | ||||||||
| Max 1-Hour | Hour | Max 8-Hour | Hour | |||||
| Monitoring Site | (ppb) | (EST) | (ppb) | (EST) | ||||
| Bristol | ? | ? | ||||||
| Norristown | 15 | 11 | 11 | 8 | ||||
| Chester | 19 | 0 | 14 | 7 | ||||
| New Garden (Airport) | 18 | 12 | 16 | 10 | ||||
| Allentown | ? | ? | ||||||
| Freemansburg | 14 | 1 | 11 | 7 | ||||
| Easton | ? | ? | ||||||
| Reading Airport | 15 | 13 | 13 | 7 | ||||
| Kutztown | 18 | 0 | 14 | 0 | ||||
| Nanticoke | 17 | 0 | 13 | 0 | ||||
| Wilkes-Barre | 18 | 0 | 13 | 0 | ||||
| Scranton | 19 | 2 | 15 | 0 | ||||
| Peckville | 18 | 1 | 15 | 0 | ||||
| Pocono | 19 | 0 | 16 | 0 | ||||
| Lancaster | 14 | 12 | 12 | 8 | ||||
| Lancaster DW | 15 | 12 | 13 | 7 | ||||
| Lebanon | 15 | 12 | 13 | 10 | ||||
| Harrisburg | ? | ? | ||||||
| Hershey | 14 | 0 | 12 | 4 | ||||
| York | 15 | 11 | 13 | 4 | ||||
| York DW | 19 | 13 | 18 | 9 | ||||
| Perry County | 16 | 0 | 14 | 0 | ||||
| Methodist Hill | 18 | 0 | 17 | 0 | ||||
| Altoona | 15 | 0 | 12 | 7 | ||||
| State College | ? | ? | ||||||
| Montoursville | 18 | 0 | 16 | 0 | ||||
| Tioga County | 17 | 5 | 16 | 0 | ||||
| Johnstown | 17 | 9 | 15 | 5 | ||||
| Moshannon | 14 | 0 | 12 | 22 | ||||
| Strongstown | 17 | 8 | 16 | 6 | ||||
| Greensburg | 14 | 23 | 12 | 16 | ||||
| Marcellus (Houston) | 12 | 11 | 11 | 5 | ||||
| Charleroi | 17 | 2 | 15 | 0 | ||||
| Washington | 17 | 2 | 15 | 0 | ||||
| Holbrook | 18 | 3 | 17 | 0 | ||||
| Florence | 18 | 4 | 18 | 20 | ||||
| Hookstown | 18 | 23 | 17 | 1 | ||||
| Brighton Twp | 17 | 5 | 17 | 22 | ||||
| Beaver Falls | 16 | 10 | 15 | 19 | ||||
| Murrysville | 15 | 3 | 14 | 18 | ||||
| Kittanning | 16 | 11 | 15 | 18 | ||||
| Pittsburgh | 9 | 22 | 8 | 17 | ||||
| New Castle | 12 | 4 | 11 | 22 | ||||
| Farrell | 16 | 5 | 16 | 20 | ||||
| Erie | 17 | 18 | 18 | 23 | ||||
| Philadelphia County Sites | ||||||||
| Baxter (Northeast Phila) | 16 | 2 | 9 | 0 | ||||
| NE Airport (Northeast Phila) | 19 | 0 | 14 | 8 | ||||
| AMS Lab (Eastcentral Phila) | 12 | 0 | 8 | 0 | ||||
| Allegheny County Sites | ||||||||
| Lawrenceville | 14 | 22 | 13 | 19 | ||||
| Harrison Twp | 13 | 4 | 13 | 20 | ||||
| South Fayette | 18 | 4 | 17 | 2 | ||||