Oregon Cities Ranked by Indoor Radon Levels
Measured averages from Airthings devices across Oregon, USA. Action level: 4 pCi/L — the threshold at which remediation is recommended.
Drain has the highest measured indoor radon in Oregon at 5.7 pCi/L, based on Airthings measurements across 79 cities.
Updated September 28, 2026
Highest city
5.7pCi/L
Drain
Oregon city average
1.6pCi/L
across 79 cities
Above action level
1/ 79
cities
| # | Location | Avg level | vs action level |
|---|---|---|---|
| 1 | Drain | 5.7 pCi/L | 1.4× over |
| ✓ Below EPA action level (4 pCi/L) | |||
| 2 | Astoria | 3.7 pCi/L | 0.9× under |
| 3 | Amity | 3.3 pCi/L | 0.8× under |
| 4 | Hood River | 2.8 pCi/L | 0.7× under |
| 5 | Banks | 2.6 pCi/L | 0.7× under |
| 6 | Sherwood | 2.6 pCi/L | 0.7× under |
| 7 | Sandy | 2.6 pCi/L | 0.7× under |
| 8 | Salem | 2.6 pCi/L | 0.6× under |
| 9 | Beaverton | 2.5 pCi/L | 0.6× under |
| 10 | Milwaukie | 2.4 pCi/L | 0.6× under |
| 11 | Lents | 2.3 pCi/L | 0.6× under |
| 12 | Tigard | 2.2 pCi/L | 0.6× under |
| 13 | Bend | 2.2 pCi/L | 0.5× under |
| 14 | Molalla | 2.1 pCi/L | 0.5× under |
| 15 | Clackamas | 2.1 pCi/L | 0.5× under |
| 16 | Durham | 2.1 pCi/L | 0.5× under |
| 17 | Yamhill | 2.1 pCi/L | 0.5× under |
| 18 | Keizer | 2.1 pCi/L | 0.5× under |
| 19 | Raleigh Hills | 2.0 pCi/L | 0.5× under |
| 20 | Estacada | 2.0 pCi/L | 0.5× under |
| 21 | Gladstone | 2.0 pCi/L | 0.5× under |
| 22 | West Slope | 1.9 pCi/L | 0.5× under |
| 23 | Scappoose | 1.9 pCi/L | 0.5× under |
| 24 | Independence | 1.9 pCi/L | 0.5× under |
| 25 | West Linn | 1.9 pCi/L | 0.5× under |
| 26 | Silverton | 1.8 pCi/L | 0.5× under |
| 27 | Portland | 1.8 pCi/L | 0.5× under |
| 28 | Beavercreek | 1.8 pCi/L | 0.4× under |
| 29 | Garden Home-Whitford | 1.7 pCi/L | 0.4× under |
| 30 | Grants Pass | 1.7 pCi/L | 0.4× under |
| 31 | Happy Valley | 1.7 pCi/L | 0.4× under |
| 32 | Newberg | 1.7 pCi/L | 0.4× under |
| 33 | Dallas | 1.7 pCi/L | 0.4× under |
| 34 | Corvallis | 1.6 pCi/L | 0.4× under |
| 35 | Fairview | 1.6 pCi/L | 0.4× under |
| 36 | Chenoweth | 1.5 pCi/L | 0.4× under |
| 37 | Lake Oswego | 1.5 pCi/L | 0.4× under |
| 38 | Turner | 1.5 pCi/L | 0.4× under |
| 39 | Stafford | 1.5 pCi/L | 0.4× under |
| 40 | West Haven-Sylvan | 1.5 pCi/L | 0.4× under |
| 41 | Medford | 1.5 pCi/L | 0.4× under |
| 42 | Oatfield | 1.5 pCi/L | 0.4× under |
| 43 | West Haven | 1.5 pCi/L | 0.4× under |
| 44 | Wilsonville | 1.5 pCi/L | 0.4× under |
| 45 | Gresham | 1.4 pCi/L | 0.4× under |
| 46 | Hillsboro | 1.4 pCi/L | 0.4× under |
| 47 | Oregon City | 1.4 pCi/L | 0.3× under |
| 48 | Ashland | 1.4 pCi/L | 0.3× under |
| 49 | Cedar Hills | 1.4 pCi/L | 0.3× under |
| 50 | Bethany | 1.4 pCi/L | 0.3× under |
| 51 | Dundee | 1.3 pCi/L | 0.3× under |
| 52 | Eugene | 1.3 pCi/L | 0.3× under |
| 53 | Damascus | 1.3 pCi/L | 0.3× under |
| 54 | Forest Grove | 1.3 pCi/L | 0.3× under |
| 55 | Veneta | 1.3 pCi/L | 0.3× under |
| 56 | Vernonia | 1.3 pCi/L | 0.3× under |
| 57 | Rockcreek | 1.3 pCi/L | 0.3× under |
| 58 | Oak Grove | 1.2 pCi/L | 0.3× under |
| 59 | Aloha | 1.2 pCi/L | 0.3× under |
| 60 | Springfield | 1.1 pCi/L | 0.3× under |
| 61 | Oak Hills | 1.1 pCi/L | 0.3× under |
| 62 | Canby | 1.1 pCi/L | 0.3× under |
| 63 | Tualatin | 1.1 pCi/L | 0.3× under |
| 64 | Hayesville | 1.0 pCi/L | 0.3× under |
| 65 | Woodburn | 1.0 pCi/L | 0.3× under |
| 66 | Jacksonville | 1.0 pCi/L | 0.2× under |
| 67 | King City | 1.0 pCi/L | 0.2× under |
| 68 | Troutdale | 1.0 pCi/L | 0.2× under |
| 69 | Metzger | 0.9 pCi/L | 0.2× under |
| 70 | McMinnville | 0.8 pCi/L | 0.2× under |
| 71 | Cedar Mill | 0.8 pCi/L | 0.2× under |
| 72 | Mount Hood Village | 0.8 pCi/L | 0.2× under |
| 73 | Albany | 0.8 pCi/L | 0.2× under |
| 74 | Cornelius | 0.7 pCi/L | 0.2× under |
| 75 | Philomath | 0.7 pCi/L | 0.2× under |
| 76 | Sunnyside | 0.7 pCi/L | 0.2× under |
| 77 | Deschutes River Woods | 0.6 pCi/L | 0.2× under |
| 78 | Toledo | 0.6 pCi/L | 0.1× under |
| 79 | Tangent | 0.5 pCi/L | 0.1× under |