Utah Cities Ranked by Indoor Radon Levels
Measured averages from Airthings devices across Utah, USA. Action level: 4 pCi/L — the threshold at which remediation is recommended.
West Bountiful has the highest measured indoor radon in Utah at 7.7 pCi/L, based on Airthings measurements across 113 cities.
Updated October 19, 2026
Highest city
7.7pCi/L
West Bountiful
Utah city average
3.4pCi/L
across 113 cities
Above action level
28/ 113
cities
| # | Location | Avg level | vs action level |
|---|---|---|---|
| 1 | West Bountiful | 7.7 pCi/L | 1.9× over |
| 2 | Nibley | 7.6 pCi/L | 1.9× over |
| 3 | Grantsville | 6.6 pCi/L | 1.7× over |
| 4 | Morgan | 6.5 pCi/L | 1.6× over |
| 5 | Providence | 6.2 pCi/L | 1.5× over |
| 6 | Liberty | 6.0 pCi/L | 1.5× over |
| 7 | Perry | 6.0 pCi/L | 1.5× over |
| 8 | Hyde Park | 5.6 pCi/L | 1.4× over |
| 9 | Wolf Creek | 5.4 pCi/L | 1.4× over |
| 10 | Erda | 5.1 pCi/L | 1.3× over |
| 11 | Centerville | 5.1 pCi/L | 1.3× over |
| 12 | Woodland Hills | 5.1 pCi/L | 1.3× over |
| 13 | Kamas | 5.0 pCi/L | 1.3× over |
| 14 | Brigham City | 4.9 pCi/L | 1.2× over |
| 15 | South Willard | 4.9 pCi/L | 1.2× over |
| 16 | Smithfield | 4.8 pCi/L | 1.2× over |
| 17 | Tooele | 4.8 pCi/L | 1.2× over |
| 18 | North Ogden | 4.8 pCi/L | 1.2× over |
| 19 | Hyrum | 4.7 pCi/L | 1.2× over |
| 20 | Highland | 4.7 pCi/L | 1.2× over |
| 21 | Pleasant Grove | 4.6 pCi/L | 1.1× over |
| 22 | Vernal | 4.5 pCi/L | 1.1× over |
| 23 | Bountiful | 4.5 pCi/L | 1.1× over |
| 24 | Stansbury park | 4.4 pCi/L | 1.1× over |
| 25 | Santaquin | 4.2 pCi/L | 1.0× over |
| 26 | American Fork | 4.1 pCi/L | 1.0× over |
| 27 | Oquirrh | 4.1 pCi/L | 1.0× over |
| 28 | Roosevelt | 4.0 pCi/L | 1.0× over |
| ✓ Below EPA action level (4 pCi/L) | |||
| 29 | Heber | 4.0 pCi/L | 1.0× under |
| 30 | Plain City | 3.9 pCi/L | 1.0× under |
| 31 | Centerfield | 3.9 pCi/L | 1.0× under |
| 32 | Little Cottonwood Creek Valley | 3.9 pCi/L | 1.0× under |
| 33 | Alpine | 3.8 pCi/L | 1.0× under |
| 34 | Woods Cross | 3.8 pCi/L | 1.0× under |
| 35 | Saratoga Springs | 3.8 pCi/L | 0.9× under |
| 36 | Lindon | 3.7 pCi/L | 0.9× under |
| 37 | Bluffdale | 3.7 pCi/L | 0.9× under |
| 38 | Granite | 3.6 pCi/L | 0.9× under |
| 39 | Pleasant View | 3.5 pCi/L | 0.9× under |
| 40 | Millville | 3.5 pCi/L | 0.9× under |
| 41 | Park City | 3.5 pCi/L | 0.9× under |
| 42 | Eagle Mountain | 3.5 pCi/L | 0.9× under |
| 43 | Elk Ridge | 3.4 pCi/L | 0.9× under |
| 44 | Lehi | 3.4 pCi/L | 0.8× under |
| 45 | Provo | 3.4 pCi/L | 0.8× under |
| 46 | Coalville | 3.4 pCi/L | 0.8× under |
| 47 | Ogden | 3.3 pCi/L | 0.8× under |
| 48 | Salem | 3.3 pCi/L | 0.8× under |
| 49 | Springville | 3.3 pCi/L | 0.8× under |
| 50 | West Jordan | 3.2 pCi/L | 0.8× under |
| 51 | Herriman | 3.2 pCi/L | 0.8× under |
| 52 | North Logan | 3.2 pCi/L | 0.8× under |
| 53 | Mountain Green | 3.2 pCi/L | 0.8× under |
| 54 | Snyderville | 3.2 pCi/L | 0.8× under |
| 55 | Farmington | 3.1 pCi/L | 0.8× under |
| 56 | River Heights | 3.0 pCi/L | 0.8× under |
| 57 | Cedar City | 3.0 pCi/L | 0.8× under |
| 58 | Mapleton | 3.0 pCi/L | 0.8× under |
| 59 | Cottonwood Heights | 3.0 pCi/L | 0.7× under |
| 60 | Midway | 3.0 pCi/L | 0.7× under |
| 61 | Spanish Fork | 3.0 pCi/L | 0.7× under |
| 62 | Oakley | 3.0 pCi/L | 0.7× under |
| 63 | Cedar Hills | 3.0 pCi/L | 0.7× under |
| 64 | East Millcreek | 2.9 pCi/L | 0.7× under |
| 65 | Riverton | 2.9 pCi/L | 0.7× under |
| 66 | South Jordan | 2.9 pCi/L | 0.7× under |
| 67 | Orem | 2.9 pCi/L | 0.7× under |
| 68 | Sandy Hills | 2.9 pCi/L | 0.7× under |
| 69 | Logan | 2.9 pCi/L | 0.7× under |
| 70 | Summit Park | 2.9 pCi/L | 0.7× under |
| 71 | Fruit Heights | 2.8 pCi/L | 0.7× under |
| 72 | Holladay | 2.8 pCi/L | 0.7× under |
| 73 | Sandy City | 2.8 pCi/L | 0.7× under |
| 74 | Ivins | 2.8 pCi/L | 0.7× under |
| 75 | Payson | 2.7 pCi/L | 0.7× under |
| 76 | Salt Lake City | 2.7 pCi/L | 0.7× under |
| 77 | South Jordan Heights | 2.7 pCi/L | 0.7× under |
| 78 | Canyon Rim | 2.7 pCi/L | 0.7× under |
| 79 | Millcreek | 2.7 pCi/L | 0.7× under |
| 80 | Mount Pleasant | 2.7 pCi/L | 0.7× under |
| 81 | Harrisville | 2.6 pCi/L | 0.7× under |
| 82 | Hurricane | 2.6 pCi/L | 0.7× under |
| 83 | Magna | 2.6 pCi/L | 0.6× under |
| 84 | Kearns | 2.6 pCi/L | 0.6× under |
| 85 | Midvale | 2.6 pCi/L | 0.6× under |
| 86 | West Valley City | 2.6 pCi/L | 0.6× under |
| 87 | Murray | 2.6 pCi/L | 0.6× under |
| 88 | Draper | 2.5 pCi/L | 0.6× under |
| 89 | South Salt Lake | 2.5 pCi/L | 0.6× under |
| 90 | North Salt Lake | 2.5 pCi/L | 0.6× under |
| 91 | Kaysville | 2.4 pCi/L | 0.6× under |
| 92 | Washington Terrace | 2.4 pCi/L | 0.6× under |
| 93 | Clearfield | 2.4 pCi/L | 0.6× under |
| 94 | White City | 2.4 pCi/L | 0.6× under |
| 95 | Willard | 2.3 pCi/L | 0.6× under |
| 96 | South Weber | 2.3 pCi/L | 0.6× under |
| 97 | Uintah | 2.3 pCi/L | 0.6× under |
| 98 | Mendon | 2.3 pCi/L | 0.6× under |
| 99 | Moab | 2.3 pCi/L | 0.6× under |
| 100 | Mount Olympus | 2.2 pCi/L | 0.6× under |
| 101 | South Ogden | 2.2 pCi/L | 0.5× under |
| 102 | Syracuse | 2.1 pCi/L | 0.5× under |
| 103 | Taylorsville | 2.0 pCi/L | 0.5× under |
| 104 | Santa Clara | 2.0 pCi/L | 0.5× under |
| 105 | Francis | 1.9 pCi/L | 0.5× under |
| 106 | Layton | 1.8 pCi/L | 0.5× under |
| 107 | Roy | 1.6 pCi/L | 0.4× under |
| 108 | Saint George | 1.6 pCi/L | 0.4× under |
| 109 | West Point | 1.5 pCi/L | 0.4× under |
| 110 | Enoch | 1.5 pCi/L | 0.4× under |
| 111 | Washington | 1.4 pCi/L | 0.3× under |
| 112 | West Haven | 1.3 pCi/L | 0.3× under |
| 113 | Clinton | 1.3 pCi/L | 0.3× under |