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| Region | Site | Units | 8-Hour | Hour Of Day | 1-Hour | Hour Of Day |
|---|---|---|---|---|---|---|
| Willamette Valley | Eugene Amazon Park | ppb | ||||
| NE Oregon | Hermiston Municipal Airport | ppb | ||||
| Portland Metro | Portland SE Lafayette | ppb | 34 | 01 AM | 24 | 01 AM |
| Willamette Valley | Salem State Hospital | ppb | ||||
| Portland Metro | Tualatin Bradbury Court | ppb | 26 | 01 AM | 9 | 01 AM |
