Kentucky Cities Ranked by Indoor Radon Levels
Measured averages from Airthings devices across Kentucky, USA. Action level: 4 pCi/L — the threshold at which remediation is recommended.
Bowling Green has the highest measured indoor radon in Kentucky at 13.3 pCi/L, based on Airthings measurements across 93 cities.
Updated September 28, 2026
Highest city
13.3pCi/L
Bowling Green
Kentucky city average
4.1pCi/L
across 93 cities
Above action level
40/ 93
cities
| # | Location | Avg level | vs action level |
|---|---|---|---|
| 1 | Bowling Green | 13.3 pCi/L | 3.3× over |
| 2 | Doe Valley | 12.0 pCi/L | 3.0× over |
| 3 | Lebanon Junction | 9.9 pCi/L | 2.5× over |
| 4 | Lyndon | 9.5 pCi/L | 2.4× over |
| 5 | Elizabethtown | 9.2 pCi/L | 2.3× over |
| 6 | Shepherdsville | 8.4 pCi/L | 2.1× over |
| 7 | Northfield | 8.3 pCi/L | 2.1× over |
| 8 | Brandenburg | 7.6 pCi/L | 1.9× over |
| 9 | Somerset | 7.5 pCi/L | 1.9× over |
| 10 | Berea | 6.9 pCi/L | 1.7× over |
| 11 | Versailles | 6.6 pCi/L | 1.7× over |
| 12 | Hebron Estates | 6.5 pCi/L | 1.6× over |
| 13 | Monticello | 6.2 pCi/L | 1.5× over |
| 14 | Vine Grove | 6.1 pCi/L | 1.5× over |
| 15 | Saint Regis Park | 5.9 pCi/L | 1.5× over |
| 16 | Plano | 5.8 pCi/L | 1.4× over |
| 17 | Barbourmeade | 5.7 pCi/L | 1.4× over |
| 18 | Graymoor-Devondale | 5.6 pCi/L | 1.4× over |
| 19 | Mount Vernon | 5.3 pCi/L | 1.3× over |
| 20 | Glasgow | 5.3 pCi/L | 1.3× over |
| 21 | Jackson | 5.3 pCi/L | 1.3× over |
| 22 | Shelbyville | 5.2 pCi/L | 1.3× over |
| 23 | Taylorsville | 5.0 pCi/L | 1.2× over |
| 24 | Middletown | 4.9 pCi/L | 1.2× over |
| 25 | Scottsville | 4.8 pCi/L | 1.2× over |
| 26 | Georgetown | 4.8 pCi/L | 1.2× over |
| 27 | Midway | 4.8 pCi/L | 1.2× over |
| 28 | Harrodsburg | 4.7 pCi/L | 1.2× over |
| 29 | Okolona | 4.7 pCi/L | 1.2× over |
| 30 | Prospect | 4.6 pCi/L | 1.2× over |
| 31 | West Buechel | 4.6 pCi/L | 1.2× over |
| 32 | Pioneer Village | 4.6 pCi/L | 1.2× over |
| 33 | Frankfort | 4.6 pCi/L | 1.1× over |
| 34 | Taylor Mill | 4.6 pCi/L | 1.1× over |
| 35 | Hurstbourne | 4.5 pCi/L | 1.1× over |
| 36 | Nicholasville | 4.4 pCi/L | 1.1× over |
| 37 | Mount Washington | 4.2 pCi/L | 1.1× over |
| 38 | Worthington | 4.1 pCi/L | 1.0× over |
| 39 | Audubon Park | 4.1 pCi/L | 1.0× over |
| 40 | Richmond | 4.0 pCi/L | 1.0× over |
| ✓ Below EPA action level (4 pCi/L) | |||
| 41 | Indian Hills | 3.9 pCi/L | 1.0× under |
| 42 | Guthrie | 3.8 pCi/L | 1.0× under |
| 43 | Saint Matthews | 3.8 pCi/L | 0.9× under |
| 44 | Bardstown | 3.7 pCi/L | 0.9× under |
| 45 | Paris | 3.6 pCi/L | 0.9× under |
| 46 | Claryville | 3.5 pCi/L | 0.9× under |
| 47 | Jeffersontown | 3.4 pCi/L | 0.8× under |
| 48 | Danville | 3.3 pCi/L | 0.8× under |
| 49 | Lexington | 3.3 pCi/L | 0.8× under |
| 50 | Pewee Valley | 3.3 pCi/L | 0.8× under |
| 51 | Crestwood | 3.2 pCi/L | 0.8× under |
| 52 | Winchester | 3.1 pCi/L | 0.8× under |
| 53 | Anchorage | 3.1 pCi/L | 0.8× under |
| 54 | Lancaster | 3.1 pCi/L | 0.8× under |
| 55 | Louisville | 3.1 pCi/L | 0.8× under |
| 56 | Wilmore | 3.1 pCi/L | 0.8× under |
| 57 | Oakbrook | 3.1 pCi/L | 0.8× under |
| 58 | Campbellsville | 3.0 pCi/L | 0.8× under |
| 59 | Owensboro | 2.9 pCi/L | 0.7× under |
| 60 | Ludlow | 2.9 pCi/L | 0.7× under |
| 61 | Highview | 2.9 pCi/L | 0.7× under |
| 62 | North Corbin | 2.9 pCi/L | 0.7× under |
| 63 | Union | 2.8 pCi/L | 0.7× under |
| 64 | Lawrenceburg | 2.8 pCi/L | 0.7× under |
| 65 | Francisville | 2.7 pCi/L | 0.7× under |
| 66 | Lexington-Fayette | 2.7 pCi/L | 0.7× under |
| 67 | Orchard Grass Hills | 2.7 pCi/L | 0.7× under |
| 68 | Fern Creek | 2.7 pCi/L | 0.7× under |
| 69 | Covington | 2.6 pCi/L | 0.7× under |
| 70 | Mount Sterling | 2.6 pCi/L | 0.6× under |
| 71 | Simpsonville | 2.6 pCi/L | 0.6× under |
| 72 | Burlington | 2.5 pCi/L | 0.6× under |
| 73 | Cold Spring | 2.5 pCi/L | 0.6× under |
| 74 | Edgewood | 2.4 pCi/L | 0.6× under |
| 75 | Fairdale | 2.2 pCi/L | 0.6× under |
| 76 | Fort Thomas | 2.1 pCi/L | 0.5× under |
| 77 | Stanford | 2.1 pCi/L | 0.5× under |
| 78 | Villa Hills | 2.1 pCi/L | 0.5× under |
| 79 | Bellevue | 2.0 pCi/L | 0.5× under |
| 80 | Independence | 1.9 pCi/L | 0.5× under |
| 81 | Walton | 1.9 pCi/L | 0.5× under |
| 82 | Lakeside Park | 1.8 pCi/L | 0.5× under |
| 83 | London | 1.8 pCi/L | 0.5× under |
| 84 | Pleasure Ridge Park | 1.7 pCi/L | 0.4× under |
| 85 | Buechel | 1.7 pCi/L | 0.4× under |
| 86 | Newport | 1.6 pCi/L | 0.4× under |
| 87 | Hebron | 1.6 pCi/L | 0.4× under |
| 88 | Dayton | 1.6 pCi/L | 0.4× under |
| 89 | Florence | 1.6 pCi/L | 0.4× under |
| 90 | La Grange | 1.6 pCi/L | 0.4× under |
| 91 | Beechwood Village | 1.5 pCi/L | 0.4× under |
| 92 | Masonville | 1.4 pCi/L | 0.3× under |
| 93 | Valley Station | 1.4 pCi/L | 0.3× under |