Alabama Cities Ranked by Indoor Radon Levels
Measured averages from Airthings devices across Alabama, USA. Action level: 4 pCi/L — the threshold at which remediation is recommended.
Priceville has the highest measured indoor radon in Alabama at 5.4 pCi/L, based on Airthings measurements across 30 cities.
Updated August 30, 2026
Highest city
5.4pCi/L
Priceville
Alabama city average
2.4pCi/L
across 30 cities
Above action level
6/ 30
cities
| # | Location | Avg level | vs action level |
|---|---|---|---|
| 1 | Priceville | 5.4 pCi/L | 1.3× over |
| 2 | Hazel Green | 4.7 pCi/L | 1.2× over |
| 3 | Harvest | 4.3 pCi/L | 1.1× over |
| 4 | Killen | 4.3 pCi/L | 1.1× over |
| 5 | Huntsville | 4.2 pCi/L | 1.0× over |
| 6 | Redstone Arsenal | 4.0 pCi/L | 1.0× over |
| ✓ Below EPA action level (4 pCi/L) | |||
| 7 | Meridianville | 3.0 pCi/L | 0.8× under |
| 8 | Birmingham | 2.8 pCi/L | 0.7× under |
| 9 | Helena | 2.6 pCi/L | 0.7× under |
| 10 | Moores Mill | 2.5 pCi/L | 0.6× under |
| 11 | Owens Cross Roads | 2.5 pCi/L | 0.6× under |
| 12 | Hoover | 2.4 pCi/L | 0.6× under |
| 13 | Auburn | 2.4 pCi/L | 0.6× under |
| 14 | Madison | 2.4 pCi/L | 0.6× under |
| 15 | Decatur | 2.4 pCi/L | 0.6× under |
| 16 | Brook Highland | 2.2 pCi/L | 0.6× under |
| 17 | Muscle Shoals | 2.1 pCi/L | 0.5× under |
| 18 | Cahaba Heights | 2.0 pCi/L | 0.5× under |
| 19 | Mountain Brook | 2.0 pCi/L | 0.5× under |
| 20 | Athens | 1.8 pCi/L | 0.5× under |
| 21 | Irondale | 1.8 pCi/L | 0.4× under |
| 22 | Lake Purdy | 1.8 pCi/L | 0.4× under |
| 23 | Falkville | 1.8 pCi/L | 0.4× under |
| 24 | Holt | 1.8 pCi/L | 0.4× under |
| 25 | Vestavia Hills | 1.4 pCi/L | 0.3× under |
| 26 | Homewood | 1.3 pCi/L | 0.3× under |
| 27 | New Market | 1.3 pCi/L | 0.3× under |
| 28 | Bridgeport | 1.0 pCi/L | 0.2× under |
| 29 | Opelika | 0.8 pCi/L | 0.2× under |
| 30 | Elberta | 0.8 pCi/L | 0.2× under |