Mississippi Cities Ranked by Indoor Radon Levels
Measured averages from Airthings devices across Mississippi, USA. Action level: 4 pCi/L — the threshold at which remediation is recommended.
Updated August 23, 2026
Highest city
0.5pCi/L
Brandon
Mississippi city average
0.5pCi/L
across 1 city
Above action level
0/ 1
cities
| # | Location | Avg level | vs action level |
|---|---|---|---|
| 1 | Brandon | 0.5 pCi/L | 0.1× under |