British Columbia Cities Ranked by Indoor Radon Levels
Measured averages from Airthings devices across British Columbia, Canada. Action level: 200 Bq/m³ — the threshold at which remediation is recommended.
Okanagan has the highest measured indoor radon in British Columbia at 478.9 Bq/m³, based on Airthings measurements across 91 cities.
Updated August 30, 2026
Highest city
478.9Bq/m³
Okanagan
British Columbia city average
101.8Bq/m³
across 91 cities
Above action level
15/ 91
cities
| # | Location | Avg level | vs action level |
|---|---|---|---|
| 1 | Okanagan | 478.9 Bq/m³ | 2.4× over |
| 2 | Castlegar | 288.8 Bq/m³ | 1.4× over |
| 3 | Lumby | 287.7 Bq/m³ | 1.4× over |
| 4 | Elkford | 281.5 Bq/m³ | 1.4× over |
| 5 | Peachland | 280.4 Bq/m³ | 1.4× over |
| 6 | Terrace | 274.4 Bq/m³ | 1.4× over |
| 7 | Kimberley | 269.1 Bq/m³ | 1.3× over |
| 8 | Sparwood | 255.6 Bq/m³ | 1.3× over |
| 9 | Chase | 250.8 Bq/m³ | 1.3× over |
| 10 | Salmo | 249.2 Bq/m³ | 1.2× over |
| 11 | Invermere | 231.6 Bq/m³ | 1.2× over |
| 12 | Creston | 228.7 Bq/m³ | 1.1× over |
| 13 | Nakusp | 222.8 Bq/m³ | 1.1× over |
| 14 | Grand Forks | 216.6 Bq/m³ | 1.1× over |
| 15 | Vernon | 203.0 Bq/m³ | 1.0× over |
| ✓ Below EPA action level (200 Bq/m³) | |||
| 16 | Trail | 189.8 Bq/m³ | 0.9× under |
| 17 | Penticton | 185.4 Bq/m³ | 0.9× under |
| 18 | West Kelowna | 178.0 Bq/m³ | 0.9× under |
| 19 | Fernie | 175.1 Bq/m³ | 0.9× under |
| 20 | Salmon Arm | 172.3 Bq/m³ | 0.9× under |
| 21 | Princeton | 169.1 Bq/m³ | 0.8× under |
| 22 | Cranbrook | 155.1 Bq/m³ | 0.8× under |
| 23 | Nelson | 152.7 Bq/m³ | 0.8× under |
| 24 | Oliver | 152.5 Bq/m³ | 0.8× under |
| 25 | Prince George | 147.0 Bq/m³ | 0.7× under |
| 26 | Kelowna | 143.4 Bq/m³ | 0.7× under |
| 27 | Osoyoos | 141.6 Bq/m³ | 0.7× under |
| 28 | Armstrong | 140.6 Bq/m³ | 0.7× under |
| 29 | Rossland | 139.3 Bq/m³ | 0.7× under |
| 30 | Revelstoke | 129.6 Bq/m³ | 0.6× under |
| 31 | Fruitvale | 125.7 Bq/m³ | 0.6× under |
| 32 | Summerland | 122.8 Bq/m³ | 0.6× under |
| 33 | Sicamous | 119.5 Bq/m³ | 0.6× under |
| 34 | Williams Lake | 110.6 Bq/m³ | 0.6× under |
| 35 | Vanderhoof | 110.3 Bq/m³ | 0.6× under |
| 36 | Enderby | 105.1 Bq/m³ | 0.5× under |
| 37 | Fort St. John | 103.7 Bq/m³ | 0.5× under |
| 38 | Golden | 102.2 Bq/m³ | 0.5× under |
| 39 | Chetwynd | 93.9 Bq/m³ | 0.5× under |
| 40 | Ladysmith | 85.4 Bq/m³ | 0.4× under |
| 41 | Dawson Creek | 83.2 Bq/m³ | 0.4× under |
| 42 | Cache Creek | 76.3 Bq/m³ | 0.4× under |
| 43 | Quesnel | 72.7 Bq/m³ | 0.4× under |
| 44 | Hope | 70.1 Bq/m³ | 0.4× under |
| 45 | Chilliwack | 68.2 Bq/m³ | 0.3× under |
| 46 | Kamloops | 66.2 Bq/m³ | 0.3× under |
| 47 | Ashcroft | 64.5 Bq/m³ | 0.3× under |
| 48 | North Cowichan | 64.4 Bq/m³ | 0.3× under |
| 49 | Colwood | 59.1 Bq/m³ | 0.3× under |
| 50 | Merritt | 57.2 Bq/m³ | 0.3× under |
| 51 | North Saanich | 49.8 Bq/m³ | 0.2× under |
| 52 | Courtenay | 49.3 Bq/m³ | 0.2× under |
| 53 | Sooke | 49.2 Bq/m³ | 0.2× under |
| 54 | Lake Cowichan | 41.1 Bq/m³ | 0.2× under |
| 55 | Anmore | 40.5 Bq/m³ | 0.2× under |
| 56 | Lions Bay | 39.8 Bq/m³ | 0.2× under |
| 57 | Agassiz | 38.0 Bq/m³ | 0.2× under |
| 58 | Powell River | 37.9 Bq/m³ | 0.2× under |
| 59 | Langford | 37.0 Bq/m³ | 0.2× under |
| 60 | Abbotsford | 36.6 Bq/m³ | 0.2× under |
| 61 | Parksville | 36.5 Bq/m³ | 0.2× under |
| 62 | Duncan | 35.7 Bq/m³ | 0.2× under |
| 63 | West Vancouver | 33.0 Bq/m³ | 0.2× under |
| 64 | Whistler | 31.1 Bq/m³ | 0.2× under |
| 65 | Nanaimo | 30.9 Bq/m³ | 0.2× under |
| 66 | Bowen Island | 30.7 Bq/m³ | 0.2× under |
| 67 | Victoria | 28.3 Bq/m³ | 0.1× under |
| 68 | Sechelt | 28.2 Bq/m³ | 0.1× under |
| 69 | Walnut Grove | 27.9 Bq/m³ | 0.1× under |
| 70 | Aldergrove | 27.8 Bq/m³ | 0.1× under |
| 71 | North Vancouver | 26.1 Bq/m³ | 0.1× under |
| 72 | Oak Bay | 25.5 Bq/m³ | 0.1× under |
| 73 | Pitt Meadows | 24.7 Bq/m³ | 0.1× under |
| 74 | Smithers | 24.4 Bq/m³ | 0.1× under |
| 75 | Port Alberni | 23.5 Bq/m³ | 0.1× under |
| 76 | Gibsons | 20.9 Bq/m³ | 0.1× under |
| 77 | Coquitlam | 19.5 Bq/m³ | 0.1× under |
| 78 | White Rock | 19.3 Bq/m³ | 0.1× under |
| 79 | Langley | 18.5 Bq/m³ | 0.1× under |
| 80 | Surrey | 17.9 Bq/m³ | 0.1× under |
| 81 | New Westminster | 17.4 Bq/m³ | 0.1× under |
| 82 | Vancouver | 17.3 Bq/m³ | 0.1× under |
| 83 | Port Moody | 16.9 Bq/m³ | 0.1× under |
| 84 | Burnaby | 16.8 Bq/m³ | 0.1× under |
| 85 | Maple Ridge | 16.7 Bq/m³ | 0.1× under |
| 86 | West End | 16.1 Bq/m³ | 0.1× under |
| 87 | Metchosin | 15.0 Bq/m³ | 0.1× under |
| 88 | Delta | 14.9 Bq/m³ | 0.1× under |
| 89 | Ladner | 12.4 Bq/m³ | 0.1× under |
| 90 | Campbell River | 9.8 Bq/m³ | 0.0× under |
| 91 | Richmond | 9.1 Bq/m³ | 0.0× under |