Highest indoor radon communities (2026)

OpenStats

Highest indoor radon communities (2026)

Ranked by long-term mean indoor radon from Health Canada survey data used in OpenStats radon rankings.

Rank	Place	Province	Score
1	Regina	Saskatchewan	301.7
2	Moose Jaw	Saskatchewan	301.7
3	Weyburn	Saskatchewan	301.7
4	Winnipeg	Manitoba	256.7
5	Steinbach	Manitoba	256.7
6	Portage la Prairie	Manitoba	256.7
7	Winkler	Manitoba	256.7
8	Sherbrooke	Quebec	238.2
9	Cowansville	Quebec	238.2
10	Granby	Quebec	238.2
11	Halifax	Nova Scotia	194.7
12	Kentville	Nova Scotia	194.7
13	Truro	Nova Scotia	194.7
14	Kingston	Ontario	161
15	Brockville	Ontario	161
16	Thunder Bay	Ontario	159.1
17	Windsor	Ontario	156.4
18	Chatham-Kent	Ontario	156.4
19	Sarnia	Ontario	156.4
20	Saskatoon	Saskatchewan	151.7
21	Kelowna	British Columbia	135.3
22	Kamloops	British Columbia	135.3
23	Penticton	British Columbia	135.3
24	Salmon Arm	British Columbia	135.3
25	Vernon	British Columbia	135.3
26	Calgary	Alberta	135.1
27	Airdrie	Alberta	135.1
28	Okotoks	Alberta	135.1
29	Strathmore	Alberta	135.1
30	High River	Alberta	135.1
31	Canmore	Alberta	135.1
32	Sudbury	Ontario	131.2
33	North Bay	Ontario	131.2
34	Guelph	Ontario	130.8
35	Centre Wellington	Ontario	130.8
36	Montreal	Quebec	126.1
37	Laval	Quebec	126.1
38	Longueuil	Quebec	126.1
39	Terrebonne	Quebec	126.1
40	Joliette	Quebec	126.1
41	Lachute	Quebec	126.1
42	Saint-Hyacinthe	Quebec	126.1
43	Sainte-Agathe-des-Monts	Quebec	126.1
44	Salaberry-de-Valleyfield	Quebec	126.1
45	Quebec City	Quebec	119.7
46	Levis	Quebec	119.7
47	Saint-Georges	Quebec	119.7
48	Sainte-Marie	Quebec	119.7
49	Thetford Mines	Quebec	119.7
50	Saint John	New Brunswick	118.4
51	Fredericton	New Brunswick	118.4
52	Edmonton	Alberta	114.1
53	Leduc	Alberta	114.1
54	Spruce Grove	Alberta	114.1
55	Camrose	Alberta	114.1
56	Wetaskiwin	Alberta	114.1
57	Ottawa	Ontario	111.7
58	Gatineau	Quebec	111.7
59	Cornwall	Ontario	111.7
60	Hawkesbury	Ontario	111.7
61	Pembroke	Ontario	111.7
62	Brantford	Ontario	111.4
63	Norfolk	Ontario	111.4
64	Woodstock	Ontario	111.4
65	Peterborough	Ontario	101.1
66	Belleville - Quinte West	Ontario	101.1
67	Cobourg	Ontario	101.1
68	Kawartha Lakes	Ontario	101.1
69	Port Hope	Ontario	101.1
70	Saguenay	Quebec	96.1
71	Alma	Quebec	96.1
72	Dolbeau-Mistassini	Quebec	96.1
73	St. John's	Newfoundland and Labrador	94.5
74	Barrie	Ontario	87
75	Collingwood	Ontario	87
76	Essa	Ontario	87
77	Midland	Ontario	87
78	Orillia	Ontario	87
79	Owen Sound	Ontario	87
80	Wasaga Beach	Ontario	87
81	London	Ontario	85.1
82	Ingersoll	Ontario	85.1
83	Tillsonburg	Ontario	85.1
84	Hamilton	Ontario	84.9
85	Burlington	Ontario	84.9
86	Oakville	Ontario	84.9
87	Moncton	New Brunswick	81.4
88	Miramichi	New Brunswick	81.4
89	Kitchener	Ontario	66.5
90	Waterloo	Ontario	66.5
91	Cambridge	Ontario	66.5
92	Stratford	Ontario	66.5
93	Oshawa	Ontario	63.4
94	Abbotsford	British Columbia	61.4
95	Chilliwack	British Columbia	61.4
96	Toronto	Ontario	59.7
97	Mississauga	Ontario	59.7
98	Brampton	Ontario	59.7
99	Markham	Ontario	59.7
100	Vaughan	Ontario	59.7
101	St. Catharines	Ontario	57.3
102	Trois-Rivieres	Quebec	45.1
103	Drummondville	Quebec	45.1
104	Shawinigan	Quebec	45.1
105	Sorel-Tracy	Quebec	45.1
106	Victoriaville	Quebec	45.1
107	Victoria	British Columbia	40.5
108	Duncan	British Columbia	40.5
109	Vancouver	British Columbia	35.4
110	Burnaby	British Columbia	35.4
111	Richmond	British Columbia	35.4
112	Surrey	British Columbia	35.4
113	Ladysmith	British Columbia	35.4
114	Nanaimo	British Columbia	35.4
115	Parksville	British Columbia	35.4
116	Powell River	British Columbia	35.4
117	Squamish	British Columbia	35.4

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