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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 October 19, 2026

Highest city

478.9Bq/m³

Okanagan

British Columbia city average

101.7Bq/m³

across 91 cities

Above action level

14/ 91

cities

British Columbia Cities Ranked by Indoor Radon Levels
#LocationAvg levelvs action level
1Okanagan478.9 Bq/m³
2.4× over
2Elkford318.3 Bq/m³
1.6× over
3Castlegar288.9 Bq/m³
1.4× over
4Lumby278.7 Bq/m³
1.4× over
5Peachland272.8 Bq/m³
1.4× over
6Kimberley269.1 Bq/m³
1.3× over
7Sparwood255.6 Bq/m³
1.3× over
8Chase250.8 Bq/m³
1.3× over
9Terrace243.8 Bq/m³
1.2× over
10Creston243.4 Bq/m³
1.2× over
11Invermere237.7 Bq/m³
1.2× over
12Salmo224.5 Bq/m³
1.1× over
13Nakusp222.8 Bq/m³
1.1× over
14Grand Forks206.1 Bq/m³
1.0× over
✓ Below EPA action level (200 Bq/m³)
15Vernon199.0 Bq/m³
1.0× under
16Penticton181.4 Bq/m³
0.9× under
17West Kelowna177.8 Bq/m³
0.9× under
18Trail177.7 Bq/m³
0.9× under
19Fernie170.0 Bq/m³
0.8× under
20Princeton169.1 Bq/m³
0.8× under
21Salmon Arm168.8 Bq/m³
0.8× under
22Osoyoos160.9 Bq/m³
0.8× under
23Oliver155.3 Bq/m³
0.8× under
24Cranbrook150.2 Bq/m³
0.8× under
25Nelson149.9 Bq/m³
0.7× under
26Prince George146.6 Bq/m³
0.7× under
27Revelstoke141.3 Bq/m³
0.7× under
28Armstrong140.6 Bq/m³
0.7× under
29Kelowna140.0 Bq/m³
0.7× under
30Rossland131.1 Bq/m³
0.7× under
31Fruitvale119.9 Bq/m³
0.6× under
32Sicamous119.5 Bq/m³
0.6× under
33Summerland119.5 Bq/m³
0.6× under
34Vanderhoof110.8 Bq/m³
0.6× under
35Williams Lake109.3 Bq/m³
0.5× under
36Enderby105.1 Bq/m³
0.5× under
37Fort St. John104.8 Bq/m³
0.5× under
38Merritt101.0 Bq/m³
0.5× under
39Golden96.8 Bq/m³
0.5× under
40Chetwynd93.9 Bq/m³
0.5× under
41Dawson Creek85.4 Bq/m³
0.4× under
42Ladysmith85.4 Bq/m³
0.4× under
43Cache Creek77.6 Bq/m³
0.4× under
44Quesnel70.8 Bq/m³
0.4× under
45Hope70.1 Bq/m³
0.4× under
46Chilliwack68.1 Bq/m³
0.3× under
47Kamloops65.7 Bq/m³
0.3× under
48Ashcroft64.5 Bq/m³
0.3× under
49North Cowichan64.4 Bq/m³
0.3× under
50Colwood58.7 Bq/m³
0.3× under
51North Saanich48.6 Bq/m³
0.2× under
52Sooke48.1 Bq/m³
0.2× under
53Courtenay46.4 Bq/m³
0.2× under
54Lake Cowichan41.1 Bq/m³
0.2× under
55Lions Bay39.8 Bq/m³
0.2× under
56Agassiz38.0 Bq/m³
0.2× under
57Powell River37.9 Bq/m³
0.2× under
58Parksville37.8 Bq/m³
0.2× under
59Anmore37.2 Bq/m³
0.2× under
60Langford37.0 Bq/m³
0.2× under
61Abbotsford36.6 Bq/m³
0.2× under
62Duncan34.2 Bq/m³
0.2× under
63West Vancouver33.9 Bq/m³
0.2× under
64Whistler31.1 Bq/m³
0.2× under
65Nanaimo30.9 Bq/m³
0.2× under
66Bowen Island29.5 Bq/m³
0.1× under
67Victoria28.5 Bq/m³
0.1× under
68Aldergrove27.8 Bq/m³
0.1× under
69Gibsons27.2 Bq/m³
0.1× under
70Sechelt27.2 Bq/m³
0.1× under
71Walnut Grove26.9 Bq/m³
0.1× under
72North Vancouver25.7 Bq/m³
0.1× under
73Oak Bay25.6 Bq/m³
0.1× under
74Pitt Meadows24.5 Bq/m³
0.1× under
75Smithers24.4 Bq/m³
0.1× under
76Port Alberni23.0 Bq/m³
0.1× under
77Coquitlam19.8 Bq/m³
0.1× under
78White Rock19.3 Bq/m³
0.1× under
79Langley18.6 Bq/m³
0.1× under
80Surrey17.9 Bq/m³
0.1× under
81New Westminster17.5 Bq/m³
0.1× under
82Burnaby17.4 Bq/m³
0.1× under
83Maple Ridge17.4 Bq/m³
0.1× under
84Vancouver17.3 Bq/m³
0.1× under
85Port Moody17.0 Bq/m³
0.1× under
86West End16.2 Bq/m³
0.1× under
87Metchosin15.0 Bq/m³
0.1× under
88Delta14.9 Bq/m³
0.1× under
89Ladner12.4 Bq/m³
0.1× under
90Campbell River9.8 Bq/m³
0.0× under
91Richmond9.1 Bq/m³
0.0× under
See Canada cities ranked by radon levelSee all Provinces ranked by radon level