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 86 cities.
Updated August 16, 2026
Highest city
478.9Bq/m³
Okanagan
British Columbia city average
104.4Bq/m³
across 86 cities
Above action level
15/ 86
cities
| # | Location | Avg level | Monitors | vs action level |
|---|---|---|---|---|
| 1 | Okanagan | 478.9 Bq/m³ | 9 | 2.4× over |
| 2 | Castlegar | 288.8 Bq/m³ | 86 | 1.4× over |
| 3 | Lumby | 287.7 Bq/m³ | 14 | 1.4× over |
| 4 | Elkford | 281.5 Bq/m³ | 8 | 1.4× over |
| 5 | Peachland | 280.4 Bq/m³ | 35 | 1.4× over |
| 6 | Terrace | 274.4 Bq/m³ | 16 | 1.4× over |
| 7 | Kimberley | 269.1 Bq/m³ | 20 | 1.3× over |
| 8 | Sparwood | 255.6 Bq/m³ | 32 | 1.3× over |
| 9 | Salmo | 249.2 Bq/m³ | 7 | 1.2× over |
| 10 | Invermere | 231.6 Bq/m³ | 48 | 1.2× over |
| 11 | Creston | 228.7 Bq/m³ | 18 | 1.1× over |
| 12 | Nakusp | 222.8 Bq/m³ | 9 | 1.1× over |
| 13 | Grand Forks | 216.6 Bq/m³ | 22 | 1.1× over |
| 14 | Chase | 203.1 Bq/m³ | 23 | 1.0× over |
| 15 | Vernon | 203.0 Bq/m³ | 146 | 1.0× over |
| ✓ Below EPA action level (200 Bq/m³) | ||||
| 16 | Trail | 189.8 Bq/m³ | 16 | 0.9× under |
| 17 | Penticton | 185.4 Bq/m³ | 96 | 0.9× under |
| 18 | West Kelowna | 177.4 Bq/m³ | 164 | 0.9× under |
| 19 | Fernie | 175.1 Bq/m³ | 38 | 0.9× under |
| 20 | Salmon Arm | 172.3 Bq/m³ | 64 | 0.9× under |
| 21 | Princeton | 169.1 Bq/m³ | 21 | 0.8× under |
| 22 | Cranbrook | 155.1 Bq/m³ | 41 | 0.8× under |
| 23 | Nelson | 152.7 Bq/m³ | 122 | 0.8× under |
| 24 | Oliver | 152.5 Bq/m³ | 19 | 0.8× under |
| 25 | Prince George | 147.3 Bq/m³ | 138 | 0.7× under |
| 26 | Kelowna | 143.7 Bq/m³ | 409 | 0.7× under |
| 27 | Osoyoos | 141.6 Bq/m³ | 14 | 0.7× under |
| 28 | Armstrong | 140.6 Bq/m³ | 12 | 0.7× under |
| 29 | Rossland | 139.3 Bq/m³ | 16 | 0.7× under |
| 30 | Revelstoke | 129.6 Bq/m³ | 41 | 0.6× under |
| 31 | Fruitvale | 125.7 Bq/m³ | 8 | 0.6× under |
| 32 | Summerland | 122.8 Bq/m³ | 33 | 0.6× under |
| 33 | Sicamous | 119.5 Bq/m³ | 13 | 0.6× under |
| 34 | Williams Lake | 110.6 Bq/m³ | 20 | 0.6× under |
| 35 | Vanderhoof | 110.3 Bq/m³ | 13 | 0.6× under |
| 36 | Enderby | 105.1 Bq/m³ | 6 | 0.5× under |
| 37 | Fort St. John | 103.7 Bq/m³ | 33 | 0.5× under |
| 38 | Golden | 102.2 Bq/m³ | 20 | 0.5× under |
| 39 | Chetwynd | 93.9 Bq/m³ | 6 | 0.5× under |
| 40 | Ladysmith | 85.4 Bq/m³ | 14 | 0.4× under |
| 41 | Dawson Creek | 83.2 Bq/m³ | 15 | 0.4× under |
| 42 | Cache Creek | 76.3 Bq/m³ | 13 | 0.4× under |
| 43 | Quesnel | 72.7 Bq/m³ | 15 | 0.4× under |
| 44 | Chilliwack | 68.2 Bq/m³ | 111 | 0.3× under |
| 45 | Kamloops | 66.2 Bq/m³ | 131 | 0.3× under |
| 46 | North Cowichan | 64.4 Bq/m³ | 13 | 0.3× under |
| 47 | Colwood | 59.1 Bq/m³ | 22 | 0.3× under |
| 48 | North Saanich | 49.8 Bq/m³ | 70 | 0.2× under |
| 49 | Courtenay | 49.3 Bq/m³ | 34 | 0.2× under |
| 50 | Sooke | 49.2 Bq/m³ | 10 | 0.2× under |
| 51 | Lake Cowichan | 41.1 Bq/m³ | 11 | 0.2× under |
| 52 | Agassiz | 40.6 Bq/m³ | 13 | 0.2× under |
| 53 | Anmore | 40.5 Bq/m³ | 20 | 0.2× under |
| 54 | Lions Bay | 39.8 Bq/m³ | 30 | 0.2× under |
| 55 | Langford | 37.0 Bq/m³ | 33 | 0.2× under |
| 56 | Abbotsford | 36.6 Bq/m³ | 85 | 0.2× under |
| 57 | Parksville | 36.5 Bq/m³ | 39 | 0.2× under |
| 58 | Duncan | 35.7 Bq/m³ | 33 | 0.2× under |
| 59 | West Vancouver | 33.0 Bq/m³ | 74 | 0.2× under |
| 60 | Whistler | 31.1 Bq/m³ | 21 | 0.2× under |
| 61 | Nanaimo | 30.9 Bq/m³ | 62 | 0.2× under |
| 62 | Bowen Island | 30.7 Bq/m³ | 17 | 0.2× under |
| 63 | Sechelt | 28.2 Bq/m³ | 14 | 0.1× under |
| 64 | Victoria | 28.2 Bq/m³ | 161 | 0.1× under |
| 65 | Walnut Grove | 27.9 Bq/m³ | 34 | 0.1× under |
| 66 | Aldergrove | 27.8 Bq/m³ | 11 | 0.1× under |
| 67 | North Vancouver | 26.1 Bq/m³ | 216 | 0.1× under |
| 68 | Oak Bay | 25.9 Bq/m³ | 54 | 0.1× under |
| 69 | Pitt Meadows | 24.7 Bq/m³ | 31 | 0.1× under |
| 70 | Smithers | 24.4 Bq/m³ | 15 | 0.1× under |
| 71 | Port Alberni | 23.5 Bq/m³ | 17 | 0.1× under |
| 72 | Gibsons | 20.9 Bq/m³ | 6 | 0.1× under |
| 73 | Coquitlam | 19.6 Bq/m³ | 163 | 0.1× under |
| 74 | White Rock | 19.3 Bq/m³ | 82 | 0.1× under |
| 75 | Langley | 18.5 Bq/m³ | 84 | 0.1× under |
| 76 | Surrey | 17.9 Bq/m³ | 53 | 0.1× under |
| 77 | New Westminster | 17.4 Bq/m³ | 161 | 0.1× under |
| 78 | Vancouver | 17.3 Bq/m³ | 223 | 0.1× under |
| 79 | Burnaby | 16.8 Bq/m³ | 203 | 0.1× under |
| 80 | Maple Ridge | 16.7 Bq/m³ | 68 | 0.1× under |
| 81 | Port Moody | 16.7 Bq/m³ | 103 | 0.1× under |
| 82 | West End | 16.1 Bq/m³ | 311 | 0.1× under |
| 83 | Delta | 14.9 Bq/m³ | 33 | 0.1× under |
| 84 | Ladner | 12.4 Bq/m³ | 19 | 0.1× under |
| 85 | Campbell River | 9.8 Bq/m³ | 25 | 0.0× under |
| 86 | Richmond | 9.1 Bq/m³ | 98 | 0.0× under |