Newfoundland And Labrador Cities Ranked by Indoor Radon Levels
Measured averages from Airthings devices across Newfoundland And Labrador, Canada. Action level: 200 Bq/m³ — the threshold at which remediation is recommended.
Pasadena has the highest measured indoor radon in Newfoundland And Labrador at 207.0 Bq/m³, based on Airthings measurements across 13 cities.
Updated September 28, 2026
Highest city
207.0Bq/m³
Pasadena
Newfoundland And Labrador city average
130.3Bq/m³
across 13 cities
Above action level
2/ 13
cities
| # | Location | Avg level | vs action level |
|---|---|---|---|
| 1 | Pasadena | 207.0 Bq/m³ | 1.0× over |
| 2 | Stephenville | 204.1 Bq/m³ | 1.0× over |
| ✓ Below EPA action level (200 Bq/m³) | |||
| 3 | Deer Lake | 194.7 Bq/m³ | 1.0× under |
| 4 | Bay Roberts | 185.8 Bq/m³ | 0.9× under |
| 5 | Gambo | 184.4 Bq/m³ | 0.9× under |
| 6 | Conception Bay South | 156.8 Bq/m³ | 0.8× under |
| 7 | Wabana | 125.0 Bq/m³ | 0.6× under |
| 8 | Mount Pearl | 103.5 Bq/m³ | 0.5× under |
| 9 | Grand Falls-Windsor | 79.6 Bq/m³ | 0.4× under |
| 10 | St. John's | 79.0 Bq/m³ | 0.4× under |
| 11 | Corner Brook | 76.8 Bq/m³ | 0.4× under |
| 12 | Torbay | 62.5 Bq/m³ | 0.3× under |
| 13 | Clarenville-Shoal Harbour | 34.1 Bq/m³ | 0.2× under |