Airthings Logo

Canada Cities Ranked by Indoor Radon Levels

Measured averages from Airthings devices across Canada. Action level: 200 Bq/m³ — the threshold at which remediation is recommended.

Okanagan, British Columbia has the highest measured indoor radon of any Canada city at 478.9 Bq/m³, based on Airthings measurements across 645 cities.

Updated October 25, 2026

Highest city

478.9Bq/m³

Okanagan

Canada city average

118.8Bq/m³

across 645 cities

Above action level

74/ 645

cities

Showing the 100 highest of 645 ranked Canada cities. For the full list in one place, open a state ranking below.

Canada Cities Ranked by Indoor Radon Levels
#LocationAvg levelvs action level
1Okanagan, British Columbia478.9 Bq/m³
2.4× over
2Kamsack, Saskatchewan476.9 Bq/m³
2.4× over
3Altona, Manitoba428.0 Bq/m³
2.1× over
4Rosetown, Saskatchewan352.2 Bq/m³
1.8× over
5Wynyard, Saskatchewan349.4 Bq/m³
1.7× over
6Dauphin, Manitoba341.6 Bq/m³
1.7× over
7Carman, Manitoba324.7 Bq/m³
1.6× over
8Parrsboro, Nova Scotia324.5 Bq/m³
1.6× over
9Elkford, British Columbia318.3 Bq/m³
1.6× over
10Swan River, Manitoba311.6 Bq/m³
1.6× over
11Lumsden, Saskatchewan304.2 Bq/m³
1.5× over
12Weyburn, Saskatchewan290.1 Bq/m³
1.5× over
13Chandler, Quebec289.6 Bq/m³
1.4× over
14Castlegar, British Columbia288.9 Bq/m³
1.4× over
15Shawville, Quebec285.4 Bq/m³
1.4× over
16Gaspe, Quebec282.7 Bq/m³
1.4× over
17Dryden, Ontario280.1 Bq/m³
1.4× over
18Lumby, British Columbia278.9 Bq/m³
1.4× over
19Kindersley, Saskatchewan276.3 Bq/m³
1.4× over
20Fort Macleod, Alberta275.4 Bq/m³
1.4× over
21Campbellton, New Brunswick274.2 Bq/m³
1.4× over
22Peachland, British Columbia272.8 Bq/m³
1.4× over
23Tracadie-Sheila, New Brunswick272.4 Bq/m³
1.4× over
24Esterhazy, Saskatchewan270.7 Bq/m³
1.4× over
25Kimberley, British Columbia269.1 Bq/m³
1.3× over
26Shellbrook, Saskatchewan265.6 Bq/m³
1.3× over
27Roblin, Manitoba263.1 Bq/m³
1.3× over
28Tisdale, Saskatchewan257.6 Bq/m³
1.3× over
29Rocky Mountain House, Alberta256.3 Bq/m³
1.3× over
30Sparwood, British Columbia255.6 Bq/m³
1.3× over
31Brant, Ontario255.5 Bq/m³
1.3× over
32Regina, Saskatchewan255.4 Bq/m³
1.3× over
33Florenceville-Bristol, New Brunswick252.5 Bq/m³
1.3× over
34Chase, British Columbia250.8 Bq/m³
1.3× over
35Rimbey, Alberta244.7 Bq/m³
1.2× over
36Terrace, British Columbia243.8 Bq/m³
1.2× over
37Creston, British Columbia243.4 Bq/m³
1.2× over
38Atikokan, Ontario241.4 Bq/m³
1.2× over
39Sylvan Lake, Alberta239.8 Bq/m³
1.2× over
40Thurso, Quebec238.4 Bq/m³
1.2× over
41Invermere, British Columbia237.7 Bq/m³
1.2× over
42Morden, Manitoba237.5 Bq/m³
1.2× over
43Alberton, Prince Edward Island236.8 Bq/m³
1.2× over
44Carlyle, Saskatchewan236.2 Bq/m³
1.2× over
45Plessisville, Quebec234.3 Bq/m³
1.2× over
46Sainte-Anne-des-Monts, Quebec228.8 Bq/m³
1.1× over
47Salmo, British Columbia228.8 Bq/m³
1.1× over
48Sundre, Alberta228.4 Bq/m³
1.1× over
49Miramichi, New Brunswick227.3 Bq/m³
1.1× over
50Amherst, Nova Scotia226.4 Bq/m³
1.1× over
51Morris, Manitoba225.5 Bq/m³
1.1× over
52Outlook, Saskatchewan225.5 Bq/m³
1.1× over
53Nakusp, British Columbia222.8 Bq/m³
1.1× over
54Deux-Montagnes, Quebec222.5 Bq/m³
1.1× over
55Beauceville, Quebec221.1 Bq/m³
1.1× over
56Portage la Prairie, Manitoba219.6 Bq/m³
1.1× over
57La Ronge, Saskatchewan218.4 Bq/m³
1.1× over
58Mont-Laurier, Quebec216.8 Bq/m³
1.1× over
59Riviere-Rouge, Quebec216.6 Bq/m³
1.1× over
60Hinton, Alberta216.2 Bq/m³
1.1× over
61Flin Flon, Manitoba214.8 Bq/m³
1.1× over
62Mont-Joli, Quebec214.4 Bq/m³
1.1× over
63Carleton-sur-Mer, Quebec212.1 Bq/m³
1.1× over
64Hay River, Northwest Territories210.4 Bq/m³
1.1× over
65Kensington, Prince Edward Island210.4 Bq/m³
1.1× over
66Fossambault-sur-lac, Quebec208.0 Bq/m³
1.0× over
67Hanna, Alberta207.2 Bq/m³
1.0× over
68Pasadena, Newfoundland And Labrador207.0 Bq/m³
1.0× over
69Black Diamond, Alberta206.2 Bq/m³
1.0× over
70Grand Forks, British Columbia206.1 Bq/m³
1.0× over
71Stephenville, Newfoundland And Labrador204.1 Bq/m³
1.0× over
72Maniwaki, Quebec203.3 Bq/m³
1.0× over
73Killarney, Manitoba201.5 Bq/m³
1.0× over
74Bellechasse Regional County Municipality, Quebec200.2 Bq/m³
1.0× over
✓ Below EPA action level (200 Bq/m³)
75Langham, Saskatchewan199.7 Bq/m³
1.0× under
76Winkler, Manitoba199.6 Bq/m³
1.0× under
77Vernon, British Columbia199.0 Bq/m³
1.0× under
78New-Richmond, Quebec198.5 Bq/m³
1.0× under
79Bathurst, New Brunswick197.6 Bq/m³
1.0× under
80Dorchester, Ontario197.3 Bq/m³
1.0× under
81Crossfield, Alberta196.8 Bq/m³
1.0× under
82Edmundston, New Brunswick196.6 Bq/m³
1.0× under
83Sydney, Nova Scotia195.6 Bq/m³
1.0× under
84Deer Lake, Newfoundland And Labrador194.7 Bq/m³
1.0× under
85Shaunavon, Saskatchewan192.7 Bq/m³
1.0× under
86Beaconsfield, Quebec191.0 Bq/m³
1.0× under
87Cornwall, Prince Edward Island190.4 Bq/m³
1.0× under
88Swift Current, Saskatchewan187.8 Bq/m³
0.9× under
89Boissevain, Manitoba187.7 Bq/m³
0.9× under
90Brandon, Manitoba186.8 Bq/m³
0.9× under
91Nackawic, New Brunswick186.8 Bq/m³
0.9× under
92Renfrew, Ontario186.4 Bq/m³
0.9× under
93Espanola, Ontario186.2 Bq/m³
0.9× under
94Stonewall, Manitoba185.4 Bq/m³
0.9× under
95Olds, Alberta185.3 Bq/m³
0.9× under
96Yorkton, Saskatchewan184.8 Bq/m³
0.9× under
97Claresholm, Alberta184.6 Bq/m³
0.9× under
98Gambo, Newfoundland And Labrador184.4 Bq/m³
0.9× under
99Smiths Falls, Ontario183.7 Bq/m³
0.9× under
100Oka, Quebec182.6 Bq/m³
0.9× under
See all Provinces ranked by radon level