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 8.2 pCi/L, based on Airthings measurements across 106 cities.
Updated August 16, 2026
Highest city
8.2pCi/L
West Bountiful
Utah city average
3.4pCi/L
across 106 cities
Above action level
29/ 106
cities
| # | Location | Avg level | Monitors | vs action level |
|---|---|---|---|---|
| 1 | West Bountiful | 8.2 pCi/L | 9 | 2.1× over |
| 2 | Nibley | 7.6 pCi/L | 9 | 1.9× over |
| 3 | Grantsville | 6.6 pCi/L | 27 | 1.7× over |
| 4 | Morgan | 6.5 pCi/L | 6 | 1.6× over |
| 5 | Providence | 6.3 pCi/L | 15 | 1.6× over |
| 6 | Liberty | 6.0 pCi/L | 7 | 1.5× over |
| 7 | Hyde Park | 5.6 pCi/L | 12 | 1.4× over |
| 8 | Wolf Creek | 5.5 pCi/L | 21 | 1.4× over |
| 9 | Erda | 5.1 pCi/L | 17 | 1.3× over |
| 10 | Centerville | 5.1 pCi/L | 30 | 1.3× over |
| 11 | Woodland Hills | 5.1 pCi/L | 6 | 1.3× over |
| 12 | Kamas | 5.0 pCi/L | 10 | 1.3× over |
| 13 | Brigham City | 5.0 pCi/L | 25 | 1.2× over |
| 14 | Tooele | 4.9 pCi/L | 34 | 1.2× over |
| 15 | Smithfield | 4.8 pCi/L | 11 | 1.2× over |
| 16 | North Ogden | 4.8 pCi/L | 27 | 1.2× over |
| 17 | Santaquin | 4.7 pCi/L | 17 | 1.2× over |
| 18 | Hyrum | 4.7 pCi/L | 13 | 1.2× over |
| 19 | Highland | 4.7 pCi/L | 12 | 1.2× over |
| 20 | Pleasant Grove | 4.6 pCi/L | 34 | 1.1× over |
| 21 | Stansbury park | 4.5 pCi/L | 24 | 1.1× over |
| 22 | Vernal | 4.5 pCi/L | 7 | 1.1× over |
| 23 | Bountiful | 4.5 pCi/L | 52 | 1.1× over |
| 24 | Oquirrh | 4.2 pCi/L | 64 | 1.1× over |
| 25 | American Fork | 4.2 pCi/L | 49 | 1.0× over |
| 26 | Little Cottonwood Creek Valley | 4.1 pCi/L | 32 | 1.0× over |
| 27 | Woods Cross | 4.1 pCi/L | 15 | 1.0× over |
| 28 | Roosevelt | 4.0 pCi/L | 10 | 1.0× over |
| 29 | Heber | 4.0 pCi/L | 65 | 1.0× over |
| ✓ Below EPA action level (4 pCi/L) | ||||
| 30 | Alpine | 4.0 pCi/L | 35 | 1.0× under |
| 31 | Plain City | 3.9 pCi/L | 6 | 1.0× under |
| 32 | Saratoga Springs | 3.9 pCi/L | 149 | 1.0× under |
| 33 | Lindon | 3.8 pCi/L | 50 | 0.9× under |
| 34 | Bluffdale | 3.7 pCi/L | 64 | 0.9× under |
| 35 | Millville | 3.6 pCi/L | 11 | 0.9× under |
| 36 | Granite | 3.6 pCi/L | 69 | 0.9× under |
| 37 | Pleasant View | 3.5 pCi/L | 13 | 0.9× under |
| 38 | Park City | 3.5 pCi/L | 127 | 0.9× under |
| 39 | Lehi | 3.5 pCi/L | 175 | 0.9× under |
| 40 | Provo | 3.5 pCi/L | 59 | 0.9× under |
| 41 | Elk Ridge | 3.4 pCi/L | 12 | 0.9× under |
| 42 | Eagle Mountain | 3.4 pCi/L | 108 | 0.8× under |
| 43 | Ogden | 3.4 pCi/L | 42 | 0.8× under |
| 44 | Snyderville | 3.4 pCi/L | 114 | 0.8× under |
| 45 | Coalville | 3.4 pCi/L | 8 | 0.8× under |
| 46 | Springville | 3.3 pCi/L | 22 | 0.8× under |
| 47 | Salem | 3.3 pCi/L | 6 | 0.8× under |
| 48 | Herriman | 3.2 pCi/L | 174 | 0.8× under |
| 49 | Ivins | 3.2 pCi/L | 9 | 0.8× under |
| 50 | North Logan | 3.2 pCi/L | 14 | 0.8× under |
| 51 | West Jordan | 3.1 pCi/L | 69 | 0.8× under |
| 52 | Mountain Green | 3.1 pCi/L | 10 | 0.8× under |
| 53 | Hurricane | 3.1 pCi/L | 6 | 0.8× under |
| 54 | Spanish Fork | 3.1 pCi/L | 38 | 0.8× under |
| 55 | Farmington | 3.1 pCi/L | 33 | 0.8× under |
| 56 | Cedar City | 3.0 pCi/L | 17 | 0.8× under |
| 57 | Mapleton | 3.0 pCi/L | 33 | 0.8× under |
| 58 | Cottonwood Heights | 3.0 pCi/L | 48 | 0.7× under |
| 59 | Midway | 3.0 pCi/L | 17 | 0.7× under |
| 60 | Cedar Hills | 3.0 pCi/L | 40 | 0.7× under |
| 61 | East Millcreek | 3.0 pCi/L | 15 | 0.7× under |
| 62 | Orem | 3.0 pCi/L | 90 | 0.7× under |
| 63 | Mount Pleasant | 3.0 pCi/L | 7 | 0.7× under |
| 64 | Riverton | 2.9 pCi/L | 45 | 0.7× under |
| 65 | Sandy City | 2.9 pCi/L | 24 | 0.7× under |
| 66 | Sandy Hills | 2.9 pCi/L | 68 | 0.7× under |
| 67 | Logan | 2.9 pCi/L | 17 | 0.7× under |
| 68 | South Jordan | 2.9 pCi/L | 70 | 0.7× under |
| 69 | Holladay | 2.9 pCi/L | 67 | 0.7× under |
| 70 | Summit Park | 2.9 pCi/L | 39 | 0.7× under |
| 71 | Fruit Heights | 2.8 pCi/L | 25 | 0.7× under |
| 72 | Millcreek | 2.8 pCi/L | 37 | 0.7× under |
| 73 | Salt Lake City | 2.7 pCi/L | 192 | 0.7× under |
| 74 | South Jordan Heights | 2.7 pCi/L | 79 | 0.7× under |
| 75 | Payson | 2.7 pCi/L | 10 | 0.7× under |
| 76 | Canyon Rim | 2.7 pCi/L | 34 | 0.7× under |
| 77 | Midvale | 2.6 pCi/L | 39 | 0.7× under |
| 78 | Murray | 2.6 pCi/L | 33 | 0.7× under |
| 79 | Magna | 2.6 pCi/L | 14 | 0.6× under |
| 80 | Kearns | 2.6 pCi/L | 7 | 0.6× under |
| 81 | West Valley City | 2.6 pCi/L | 23 | 0.6× under |
| 82 | Draper | 2.5 pCi/L | 122 | 0.6× under |
| 83 | South Ogden | 2.5 pCi/L | 10 | 0.6× under |
| 84 | South Salt Lake | 2.5 pCi/L | 48 | 0.6× under |
| 85 | Kaysville | 2.4 pCi/L | 49 | 0.6× under |
| 86 | North Salt Lake | 2.4 pCi/L | 23 | 0.6× under |
| 87 | White City | 2.4 pCi/L | 25 | 0.6× under |
| 88 | Washington Terrace | 2.4 pCi/L | 11 | 0.6× under |
| 89 | Clearfield | 2.4 pCi/L | 13 | 0.6× under |
| 90 | Mount Olympus | 2.4 pCi/L | 48 | 0.6× under |
| 91 | South Weber | 2.3 pCi/L | 24 | 0.6× under |
| 92 | Uintah | 2.3 pCi/L | 9 | 0.6× under |
| 93 | Willard | 2.3 pCi/L | 81 | 0.6× under |
| 94 | Mendon | 2.3 pCi/L | 8 | 0.6× under |
| 95 | Moab | 2.3 pCi/L | 10 | 0.6× under |
| 96 | Taylorsville | 2.2 pCi/L | 35 | 0.5× under |
| 97 | Syracuse | 2.1 pCi/L | 34 | 0.5× under |
| 98 | Santa Clara | 2.1 pCi/L | 9 | 0.5× under |
| 99 | Layton | 1.9 pCi/L | 34 | 0.5× under |
| 100 | Francis | 1.9 pCi/L | 19 | 0.5× under |
| 101 | Roy | 1.6 pCi/L | 9 | 0.4× under |
| 102 | Saint George | 1.6 pCi/L | 30 | 0.4× under |
| 103 | West Point | 1.5 pCi/L | 15 | 0.4× under |
| 104 | Washington | 1.4 pCi/L | 9 | 0.3× under |
| 105 | West Haven | 1.3 pCi/L | 13 | 0.3× under |
| 106 | Clinton | 1.3 pCi/L | 14 | 0.3× under |