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 September 28, 2026
Highest city
478.9Bq/m³
Okanagan
British Columbia city average
102.0Bq/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 | Elkford | 318.3 Bq/m³ | 1.6× over |
| 3 | Castlegar | 288.9 Bq/m³ | 1.4× over |
| 4 | Lumby | 287.7 Bq/m³ | 1.4× over |
| 5 | Peachland | 276.1 Bq/m³ | 1.4× over |
| 6 | Kimberley | 269.1 Bq/m³ | 1.3× over |
| 7 | Terrace | 266.1 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 | 235.0 Bq/m³ | 1.2× over |
| 11 | Creston | 233.4 Bq/m³ | 1.2× over |
| 12 | Invermere | 231.6 Bq/m³ | 1.2× over |
| 13 | Nakusp | 222.8 Bq/m³ | 1.1× over |
| 14 | Grand Forks | 213.1 Bq/m³ | 1.1× over |
| 15 | Vernon | 201.4 Bq/m³ | 1.0× over |
| ✓ Below EPA action level (200 Bq/m³) | |||
| 16 | Trail | 184.2 Bq/m³ | 0.9× under |
| 17 | Penticton | 181.4 Bq/m³ | 0.9× under |
| 18 | West Kelowna | 176.6 Bq/m³ | 0.9× under |
| 19 | Fernie | 171.9 Bq/m³ | 0.9× under |
| 20 | Salmon Arm | 170.1 Bq/m³ | 0.9× under |
| 21 | Princeton | 169.1 Bq/m³ | 0.8× under |
| 22 | Nelson | 150.7 Bq/m³ | 0.8× under |
| 23 | Cranbrook | 150.1 Bq/m³ | 0.8× under |
| 24 | Oliver | 149.7 Bq/m³ | 0.7× under |
| 25 | Osoyoos | 148.2 Bq/m³ | 0.7× under |
| 26 | Prince George | 146.6 Bq/m³ | 0.7× under |
| 27 | Revelstoke | 145.1 Bq/m³ | 0.7× under |
| 28 | Kelowna | 142.1 Bq/m³ | 0.7× under |
| 29 | Armstrong | 140.6 Bq/m³ | 0.7× under |
| 30 | Rossland | 134.3 Bq/m³ | 0.7× under |
| 31 | Fruitvale | 123.3 Bq/m³ | 0.6× under |
| 32 | Summerland | 119.8 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 | 104.3 Bq/m³ | 0.5× under |
| 38 | Golden | 102.2 Bq/m³ | 0.5× under |
| 39 | Chetwynd | 93.9 Bq/m³ | 0.5× under |
| 40 | Dawson Creek | 85.4 Bq/m³ | 0.4× under |
| 41 | Ladysmith | 85.4 Bq/m³ | 0.4× under |
| 42 | Merritt | 83.3 Bq/m³ | 0.4× under |
| 43 | Cache Creek | 77.6 Bq/m³ | 0.4× under |
| 44 | Quesnel | 73.5 Bq/m³ | 0.4× under |
| 45 | Hope | 70.1 Bq/m³ | 0.4× under |
| 46 | Chilliwack | 68.2 Bq/m³ | 0.3× under |
| 47 | Kamloops | 65.7 Bq/m³ | 0.3× under |
| 48 | Ashcroft | 64.5 Bq/m³ | 0.3× under |
| 49 | North Cowichan | 64.4 Bq/m³ | 0.3× under |
| 50 | Colwood | 58.7 Bq/m³ | 0.3× under |
| 51 | North Saanich | 49.7 Bq/m³ | 0.2× under |
| 52 | Sooke | 48.2 Bq/m³ | 0.2× under |
| 53 | Courtenay | 46.9 Bq/m³ | 0.2× under |
| 54 | Lake Cowichan | 41.1 Bq/m³ | 0.2× under |
| 55 | Lions Bay | 39.8 Bq/m³ | 0.2× under |
| 56 | Anmore | 38.4 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 | 34.7 Bq/m³ | 0.2× under |
| 63 | West Vancouver | 33.4 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 | 29.5 Bq/m³ | 0.1× under |
| 67 | Victoria | 28.6 Bq/m³ | 0.1× under |
| 68 | Aldergrove | 27.8 Bq/m³ | 0.1× under |
| 69 | Walnut Grove | 27.3 Bq/m³ | 0.1× under |
| 70 | Sechelt | 27.2 Bq/m³ | 0.1× under |
| 71 | North Vancouver | 26.0 Bq/m³ | 0.1× under |
| 72 | Oak Bay | 25.5 Bq/m³ | 0.1× under |
| 73 | Pitt Meadows | 24.9 Bq/m³ | 0.1× under |
| 74 | Smithers | 24.4 Bq/m³ | 0.1× under |
| 75 | Port Alberni | 23.2 Bq/m³ | 0.1× under |
| 76 | Gibsons | 20.9 Bq/m³ | 0.1× under |
| 77 | Coquitlam | 19.8 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 | 18.2 Bq/m³ | 0.1× under |
| 81 | Maple Ridge | 17.6 Bq/m³ | 0.1× under |
| 82 | New Westminster | 17.5 Bq/m³ | 0.1× under |
| 83 | Vancouver | 17.2 Bq/m³ | 0.1× under |
| 84 | Burnaby | 17.1 Bq/m³ | 0.1× under |
| 85 | Port Moody | 16.9 Bq/m³ | 0.1× under |
| 86 | West End | 16.0 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 |