Michigan Cities Ranked by Indoor Radon Levels

Measured averages from Airthings devices across Michigan, USA. Action level: 4 pCi/L — the threshold at which remediation is recommended.

Hillsdale has the highest measured indoor radon in Michigan at 9.3 pCi/L, based on Airthings measurements across 251 cities.

Updated August 30, 2026

Highest city

9.3pCi/L

Hillsdale

Michigan city average

2.3pCi/L

across 251 cities

Above action level

18/ 251

cities

Michigan Cities Ranked by Indoor Radon Levels
#	Location	Avg level	vs action level
1	Hillsdale	9.3 pCi/L	2.3× over
2	Gwinn	8.2 pCi/L	2.1× over
3	Gladstone	7.8 pCi/L	2.0× over
4	Coldwater	7.7 pCi/L	1.9× over
5	West Monroe	7.2 pCi/L	1.8× over
6	Escanaba	6.9 pCi/L	1.7× over
7	Manitou Beach-Devils Lake	6.5 pCi/L	1.6× over
8	Napoleon	6.5 pCi/L	1.6× over
9	Brooklyn	6.0 pCi/L	1.5× over
10	Carleton	5.8 pCi/L	1.4× over
11	Grass Lake	5.0 pCi/L	1.2× over
12	Allegan	4.8 pCi/L	1.2× over
13	Lapeer	4.7 pCi/L	1.2× over
14	Bath	4.5 pCi/L	1.1× over
15	Leslie	4.2 pCi/L	1.1× over
16	Chelsea	4.1 pCi/L	1.0× over
17	Parchment	4.0 pCi/L	1.0× over
18	Stockbridge	4.0 pCi/L	1.0× over
✓ Below EPA action level (4 pCi/L)
19	DeWitt	3.9 pCi/L	1.0× under
20	Stony Point	3.8 pCi/L	1.0× under
21	Gaylord	3.8 pCi/L	0.9× under
22	Portland	3.7 pCi/L	0.9× under
23	Saint Johns	3.7 pCi/L	0.9× under
24	Jenison	3.6 pCi/L	0.9× under
25	Pinckney	3.6 pCi/L	0.9× under
26	Middleville	3.6 pCi/L	0.9× under
27	Adrian	3.4 pCi/L	0.8× under
28	Montrose	3.4 pCi/L	0.8× under
29	Jackson	3.3 pCi/L	0.8× under
30	Allen Park	3.3 pCi/L	0.8× under
31	Grosse Ile	3.2 pCi/L	0.8× under
32	Holly	3.2 pCi/L	0.8× under
33	Williamston	3.2 pCi/L	0.8× under
34	Oxford	3.2 pCi/L	0.8× under
35	Buchanan	3.1 pCi/L	0.8× under
36	Ecorse	3.1 pCi/L	0.8× under
37	Walled Lake	3.1 pCi/L	0.8× under
38	Rochester Hills	3.1 pCi/L	0.8× under
39	Fenton	3.0 pCi/L	0.8× under
40	Romeo	3.0 pCi/L	0.8× under
41	Clarkston	3.0 pCi/L	0.8× under
42	Marshall	3.0 pCi/L	0.7× under
43	Argentine	3.0 pCi/L	0.7× under
44	Grosse Pointe	3.0 pCi/L	0.7× under
45	Ionia	2.9 pCi/L	0.7× under
46	Iron Mountain	2.9 pCi/L	0.7× under
47	Manchester	2.9 pCi/L	0.7× under
48	Plainwell	2.9 pCi/L	0.7× under
49	South Lyon	2.9 pCi/L	0.7× under
50	Westwood	2.9 pCi/L	0.7× under
51	Durand	2.9 pCi/L	0.7× under
52	Vandercook Lake	2.9 pCi/L	0.7× under
53	Dimondale	2.8 pCi/L	0.7× under
54	Dundee	2.8 pCi/L	0.7× under
55	Brighton	2.8 pCi/L	0.7× under
56	Lake Orion	2.8 pCi/L	0.7× under
57	Stevensville	2.8 pCi/L	0.7× under
58	Cedar Springs	2.8 pCi/L	0.7× under
59	Corunna	2.7 pCi/L	0.7× under
60	Owosso	2.7 pCi/L	0.7× under
61	Hastings	2.7 pCi/L	0.7× under
62	Spring Arbor	2.7 pCi/L	0.7× under
63	Battle Creek	2.7 pCi/L	0.7× under
64	Flushing	2.7 pCi/L	0.7× under
65	Keego Harbor	2.6 pCi/L	0.7× under
66	Otsego	2.6 pCi/L	0.7× under
67	Milford	2.6 pCi/L	0.7× under
68	Detroit	2.6 pCi/L	0.7× under
69	Farmington Hills	2.6 pCi/L	0.6× under
70	Alpena	2.6 pCi/L	0.6× under
71	Howell	2.6 pCi/L	0.6× under
72	Norway	2.5 pCi/L	0.6× under
73	Swartz Creek	2.5 pCi/L	0.6× under
74	Almont	2.5 pCi/L	0.6× under
75	Ann Arbor	2.5 pCi/L	0.6× under
76	Milan	2.5 pCi/L	0.6× under
77	Bloomfield Hills	2.5 pCi/L	0.6× under
78	Whitmore Lake	2.5 pCi/L	0.6× under
79	Galesburg	2.5 pCi/L	0.6× under
80	Sparta	2.5 pCi/L	0.6× under
81	Traverse City	2.5 pCi/L	0.6× under
82	Waterford	2.5 pCi/L	0.6× under
83	Armada	2.5 pCi/L	0.6× under
84	Cadillac	2.5 pCi/L	0.6× under
85	Grosse Pointe Park	2.5 pCi/L	0.6× under
86	Kalamazoo	2.5 pCi/L	0.6× under
87	Ypsilanti	2.5 pCi/L	0.6× under
88	Belleville	2.4 pCi/L	0.6× under
89	Dexter	2.4 pCi/L	0.6× under
90	Grosse Pointe Farms	2.4 pCi/L	0.6× under
91	Michigan Center	2.4 pCi/L	0.6× under
92	Sault Ste. Marie	2.4 pCi/L	0.6× under
93	Eaton Rapids	2.4 pCi/L	0.6× under
94	Saline	2.3 pCi/L	0.6× under
95	Temperance	2.3 pCi/L	0.6× under
96	Auburn Hills	2.3 pCi/L	0.6× under
97	Perry	2.3 pCi/L	0.6× under
98	Rogers City	2.3 pCi/L	0.6× under
99	Charlotte	2.3 pCi/L	0.6× under
100	Grosse Pointe Shores	2.3 pCi/L	0.6× under
101	Farmington	2.3 pCi/L	0.6× under
102	West Bloomfield Township	2.3 pCi/L	0.6× under
103	Wyandotte	2.3 pCi/L	0.6× under
104	Rochester	2.3 pCi/L	0.6× under
105	Bingham Farms	2.3 pCi/L	0.6× under
106	Clinton	2.3 pCi/L	0.6× under
107	Portage	2.3 pCi/L	0.6× under
108	Southgate	2.3 pCi/L	0.6× under
109	Three Rivers	2.3 pCi/L	0.6× under
110	Frankenmuth	2.3 pCi/L	0.6× under
111	Mason	2.3 pCi/L	0.6× under
112	Wolverine Lake	2.3 pCi/L	0.6× under
113	East Lansing	2.2 pCi/L	0.6× under
114	Lowell	2.2 pCi/L	0.6× under
115	Wixom	2.2 pCi/L	0.6× under
116	Northville	2.2 pCi/L	0.6× under
117	Sturgis	2.2 pCi/L	0.6× under
118	Shields	2.2 pCi/L	0.5× under
119	Comstock Park	2.2 pCi/L	0.5× under
120	Haslett	2.2 pCi/L	0.5× under
121	Plymouth	2.2 pCi/L	0.5× under
122	Potterville	2.1 pCi/L	0.5× under
123	Wyoming	2.1 pCi/L	0.5× under
124	Caledonia	2.1 pCi/L	0.5× under
125	Grandville	2.1 pCi/L	0.5× under
126	Linden	2.1 pCi/L	0.5× under
127	Canton	2.1 pCi/L	0.5× under
128	Romulus	2.1 pCi/L	0.5× under
129	Berrien Springs	2.1 pCi/L	0.5× under
130	Hudsonville	2.1 pCi/L	0.5× under
131	Vicksburg	2.1 pCi/L	0.5× under
132	Allendale	2.0 pCi/L	0.5× under
133	Franklin	2.0 pCi/L	0.5× under
134	Orchard Lake	2.0 pCi/L	0.5× under
135	Albion	2.0 pCi/L	0.5× under
136	Petersburg	2.0 pCi/L	0.5× under
137	Troy	2.0 pCi/L	0.5× under
138	Tecumseh	2.0 pCi/L	0.5× under
139	Comstock Northwest	2.0 pCi/L	0.5× under
140	New Haven	1.9 pCi/L	0.5× under
141	Greilickville	1.9 pCi/L	0.5× under
142	Marysville	1.9 pCi/L	0.5× under
143	Novi	1.9 pCi/L	0.5× under
144	Shelby	1.9 pCi/L	0.5× under
145	Eastwood	1.9 pCi/L	0.5× under
146	Holt	1.9 pCi/L	0.5× under
147	Lambertville	1.9 pCi/L	0.5× under
148	Niles	1.9 pCi/L	0.5× under
149	Sylvan Lake	1.9 pCi/L	0.5× under
150	Greenville	1.9 pCi/L	0.5× under
151	Laingsburg	1.9 pCi/L	0.5× under
152	Monroe	1.9 pCi/L	0.5× under
153	Davison	1.9 pCi/L	0.5× under
154	Goodrich	1.9 pCi/L	0.5× under
155	Hubbard Lake	1.9 pCi/L	0.5× under
156	Pontiac	1.9 pCi/L	0.5× under
157	Bellevue	1.8 pCi/L	0.5× under
158	Brownlee Park	1.8 pCi/L	0.5× under
159	Grand Ledge	1.8 pCi/L	0.5× under
160	Rockford	1.8 pCi/L	0.4× under
161	Lincoln Park	1.8 pCi/L	0.4× under
162	Woodhaven	1.8 pCi/L	0.4× under
163	Ortonville	1.7 pCi/L	0.4× under
164	Beulah	1.7 pCi/L	0.4× under
165	Edgemont Park	1.7 pCi/L	0.4× under
166	Flint	1.7 pCi/L	0.4× under
167	Grand Rapids	1.7 pCi/L	0.4× under
168	Paw Paw	1.7 pCi/L	0.4× under
169	River Rouge	1.7 pCi/L	0.4× under
170	Petoskey	1.7 pCi/L	0.4× under
171	Byron Center	1.7 pCi/L	0.4× under
172	Utica	1.6 pCi/L	0.4× under
173	Flat Rock	1.6 pCi/L	0.4× under
174	Fraser	1.6 pCi/L	0.4× under
175	Kalkaska	1.6 pCi/L	0.4× under
176	Grand Haven	1.6 pCi/L	0.4× under
177	Mattawan	1.6 pCi/L	0.4× under
178	Northview	1.6 pCi/L	0.4× under
179	Taylor	1.6 pCi/L	0.4× under
180	Birmingham	1.6 pCi/L	0.4× under
181	East Jordan	1.6 pCi/L	0.4× under
182	Rockwood	1.6 pCi/L	0.4× under
183	Charlevoix	1.6 pCi/L	0.4× under
184	Forest Hills	1.6 pCi/L	0.4× under
185	Imlay City	1.6 pCi/L	0.4× under
186	Saginaw	1.6 pCi/L	0.4× under
187	Fair Plain	1.5 pCi/L	0.4× under
188	Lake Fenton	1.5 pCi/L	0.4× under
189	Clawson	1.5 pCi/L	0.4× under
190	Zeeland	1.5 pCi/L	0.4× under
191	Saint Clair Shores	1.5 pCi/L	0.4× under
192	Sterling Heights	1.5 pCi/L	0.4× under
193	Westland	1.5 pCi/L	0.4× under
194	Bay City	1.5 pCi/L	0.4× under
195	Okemos	1.5 pCi/L	0.4× under
196	Livonia	1.4 pCi/L	0.4× under
197	Berkley	1.4 pCi/L	0.4× under
198	Huntington Woods	1.4 pCi/L	0.4× under
199	Beverly Hills	1.4 pCi/L	0.4× under
200	Fowlerville	1.4 pCi/L	0.3× under
201	Marquette	1.4 pCi/L	0.3× under
202	Grosse Pointe Woods	1.4 pCi/L	0.3× under
203	Lakeview	1.4 pCi/L	0.3× under
204	Menominee	1.4 pCi/L	0.3× under
205	Oak Park	1.4 pCi/L	0.3× under
206	Lansing	1.4 pCi/L	0.3× under
207	Grand Blanc	1.4 pCi/L	0.3× under
208	Kentwood	1.4 pCi/L	0.3× under
209	Schoolcraft	1.3 pCi/L	0.3× under
210	Harbor Springs	1.3 pCi/L	0.3× under
211	Midland	1.3 pCi/L	0.3× under
212	Port Huron	1.3 pCi/L	0.3× under
213	New Baltimore	1.3 pCi/L	0.3× under
214	Mount Clemens	1.3 pCi/L	0.3× under
215	South Gull Lake	1.3 pCi/L	0.3× under
216	East Grand Rapids	1.3 pCi/L	0.3× under
217	Hancock	1.2 pCi/L	0.3× under
218	Walker	1.2 pCi/L	0.3× under
219	Trenton	1.2 pCi/L	0.3× under
220	Pleasant Ridge	1.2 pCi/L	0.3× under
221	Big Rapids	1.1 pCi/L	0.3× under
222	Elk Rapids	1.1 pCi/L	0.3× under
223	Redford	1.1 pCi/L	0.3× under
224	Burton	1.1 pCi/L	0.3× under
225	Inkster	1.1 pCi/L	0.3× under
226	Kingsley	1.1 pCi/L	0.3× under
227	Marine City	1.1 pCi/L	0.3× under
228	Beechwood	1.0 pCi/L	0.3× under
229	Dearborn	1.0 pCi/L	0.3× under
230	Saint Joseph	1.0 pCi/L	0.3× under
231	Dearborn Heights	1.0 pCi/L	0.3× under
232	Royal Oak	1.0 pCi/L	0.3× under
233	Lexington	1.0 pCi/L	0.3× under
234	Cheboygan	1.0 pCi/L	0.2× under
235	Madison Heights	1.0 pCi/L	0.2× under
236	Saint Clair	1.0 pCi/L	0.2× under
237	Spring Lake	1.0 pCi/L	0.2× under
238	Garden City	0.9 pCi/L	0.2× under
239	Belding	0.9 pCi/L	0.2× under
240	Holland	0.9 pCi/L	0.2× under
241	Ferndale	0.9 pCi/L	0.2× under
242	Bellaire	0.8 pCi/L	0.2× under
243	Roseville	0.8 pCi/L	0.2× under
244	Hazel Park	0.8 pCi/L	0.2× under
245	Norton Shores	0.8 pCi/L	0.2× under
246	Leland	0.8 pCi/L	0.2× under
247	Manistee	0.7 pCi/L	0.2× under
248	Waverly	0.7 pCi/L	0.2× under
249	Highland Park	0.6 pCi/L	0.2× under
250	Wayne	0.6 pCi/L	0.2× under
251	Hamtramck	0.5 pCi/L	0.1× under

See USA cities ranked by radon level See all States ranked by radon level