Nevada Cities Ranked by Indoor Radon Levels
Measured averages from Airthings devices across Nevada, USA. Action level: 4 pCi/L — the threshold at which remediation is recommended.
Verdi has the highest measured indoor radon in Nevada at 6.6 pCi/L, based on Airthings measurements across 26 cities.
Updated August 30, 2026
Highest city
6.6pCi/L
Verdi
Nevada city average
2.0pCi/L
across 26 cities
Above action level
4/ 26
cities
| # | Location | Avg level | vs action level |
|---|---|---|---|
| 1 | Verdi | 6.6 pCi/L | 1.6× over |
| 2 | Carson City | 4.6 pCi/L | 1.2× over |
| 3 | Gardnerville | 4.3 pCi/L | 1.1× over |
| 4 | Kingsbury | 4.3 pCi/L | 1.1× over |
| ✓ Below EPA action level (4 pCi/L) | |||
| 5 | Dayton | 2.9 pCi/L | 0.7× under |
| 6 | Reno | 2.7 pCi/L | 0.7× under |
| 7 | Incline Village | 2.6 pCi/L | 0.7× under |
| 8 | Sparks | 2.3 pCi/L | 0.6× under |
| 9 | Indian Hills | 2.3 pCi/L | 0.6× under |
| 10 | Gardnerville Ranchos | 2.1 pCi/L | 0.5× under |
| 11 | Virginia City | 2.1 pCi/L | 0.5× under |
| 12 | Johnson Lane | 1.7 pCi/L | 0.4× under |
| 13 | Cold Springs | 1.6 pCi/L | 0.4× under |
| 14 | Minden | 1.6 pCi/L | 0.4× under |
| 15 | Mogul | 1.4 pCi/L | 0.4× under |
| 16 | Spanish Springs | 1.2 pCi/L | 0.3× under |
| 17 | Mesquite | 1.2 pCi/L | 0.3× under |
| 18 | Paradise | 1.0 pCi/L | 0.3× under |
| 19 | Whitney | 0.9 pCi/L | 0.2× under |
| 20 | Enterprise | 0.9 pCi/L | 0.2× under |
| 21 | Henderson | 0.9 pCi/L | 0.2× under |
| 22 | Summerlin South | 0.8 pCi/L | 0.2× under |
| 23 | Winchester | 0.8 pCi/L | 0.2× under |
| 24 | North Las Vegas | 0.8 pCi/L | 0.2× under |
| 25 | Spring Valley | 0.6 pCi/L | 0.1× under |
| 26 | Las Vegas | 0.5 pCi/L | 0.1× under |