Northwest Territories Cities Ranked by Indoor Radon Levels
Measured averages from Airthings devices across Northwest Territories, Canada. Action level: 200 Bq/m³ — the threshold at which remediation is recommended.
Hay River has the highest measured indoor radon in Northwest Territories at 210.5 Bq/m³, based on Airthings measurements across 2 cities.
Updated October 19, 2026
Highest city
210.5Bq/m³
Hay River
Northwest Territories city average
157.6Bq/m³
across 2 cities
Above action level
1/ 2
cities
| # | Location | Avg level | vs action level |
|---|---|---|---|
| 1 | Hay River | 210.5 Bq/m³ | 1.1× over |
| ✓ Below EPA action level (200 Bq/m³) | |||
| 2 | Yellowknife | 104.6 Bq/m³ | 0.5× under |