Georgia Cities Ranked by Indoor Radon Levels

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

Grayson has the highest measured indoor radon in Georgia at 6.1 pCi/L, based on Airthings measurements across 115 cities.

Updated August 16, 2026

Highest city

6.1pCi/L

Grayson

Georgia city average

2.6pCi/L

across 115 cities

Above action level

9/ 115

cities

Georgia Cities Ranked by Indoor Radon Levels
#	Location	Avg level	Monitors	vs action level
1	Grayson	6.1 pCi/L	22	1.5× over
2	Clarkesville	5.8 pCi/L	7	1.4× over
3	Cleveland	5.4 pCi/L	18	1.4× over
4	Winder	5.1 pCi/L	10	1.3× over
5	Blue Ridge	4.7 pCi/L	45	1.2× over
6	Statham	4.5 pCi/L	8	1.1× over
7	Walnut Grove	4.4 pCi/L	8	1.1× over
8	McCaysville	4.3 pCi/L	9	1.1× over
9	Loganville	4.0 pCi/L	20	1.0× over
✓ Below EPA action level (4 pCi/L)
10	Russell	4.0 pCi/L	6	1.0× under
11	Gainesville	4.0 pCi/L	42	1.0× under
12	Rydal	3.9 pCi/L	15	1.0× under
13	Braselton	3.9 pCi/L	39	1.0× under
14	Jefferson	3.8 pCi/L	13	1.0× under
15	Pine Mountain	3.8 pCi/L	6	1.0× under
16	Jasper	3.7 pCi/L	25	0.9× under
17	Dalton	3.7 pCi/L	13	0.9× under
18	Emerson	3.7 pCi/L	11	0.9× under
19	Flowery Branch	3.6 pCi/L	57	0.9× under
20	Stone Mountain	3.6 pCi/L	7	0.9× under
21	Monroe	3.6 pCi/L	10	0.9× under
22	Bogart	3.6 pCi/L	13	0.9× under
23	Villa Rica	3.5 pCi/L	29	0.9× under
24	Tucker	3.5 pCi/L	28	0.9× under
25	East Point	3.5 pCi/L	10	0.9× under
26	Senoia	3.5 pCi/L	22	0.9× under
27	Stockbridge	3.5 pCi/L	10	0.9× under
28	Blairsville	3.3 pCi/L	42	0.8× under
29	Hoschton	3.3 pCi/L	35	0.8× under
30	Snellville	3.3 pCi/L	52	0.8× under
31	Dacula	3.2 pCi/L	44	0.8× under
32	Buford	3.2 pCi/L	34	0.8× under
33	Cedartown	3.2 pCi/L	10	0.8× under
34	Winterville	3.0 pCi/L	6	0.8× under
35	Auburn	3.0 pCi/L	43	0.8× under
36	Canton	3.0 pCi/L	55	0.7× under
37	Ball Ground	3.0 pCi/L	19	0.7× under
38	Oakwood	2.9 pCi/L	34	0.7× under
39	Rome	2.9 pCi/L	12	0.7× under
40	Lithia Springs	2.9 pCi/L	7	0.7× under
41	Palmetto	2.8 pCi/L	17	0.7× under
42	Dahlonega	2.7 pCi/L	31	0.7× under
43	Mountain City	2.6 pCi/L	6	0.7× under
44	Chamblee	2.6 pCi/L	44	0.7× under
45	Lawrenceville	2.6 pCi/L	44	0.6× under
46	Mountain Park	2.6 pCi/L	31	0.6× under
47	Peachtree City	2.5 pCi/L	35	0.6× under
48	Union City	2.5 pCi/L	12	0.6× under
49	Belvedere Park	2.5 pCi/L	8	0.6× under
50	Cartersville	2.5 pCi/L	18	0.6× under
51	Lovejoy	2.5 pCi/L	8	0.6× under
52	Sandy Springs	2.4 pCi/L	123	0.6× under
53	Carrollton	2.4 pCi/L	15	0.6× under
54	North Atlanta	2.4 pCi/L	134	0.6× under
55	Vinings	2.4 pCi/L	94	0.6× under
56	Conyers	2.4 pCi/L	6	0.6× under
57	Social Circle	2.4 pCi/L	8	0.6× under
58	Tyrone	2.4 pCi/L	25	0.6× under
59	Athens	2.4 pCi/L	21	0.6× under
60	Dallas	2.3 pCi/L	26	0.6× under
61	Newnan	2.3 pCi/L	14	0.6× under
62	Dawsonville	2.3 pCi/L	32	0.6× under
63	Country Club Estates	2.2 pCi/L	7	0.6× under
64	Doraville	2.2 pCi/L	25	0.6× under
65	Milton	2.2 pCi/L	70	0.6× under
66	Clayton	2.2 pCi/L	6	0.6× under
67	Nelson	2.2 pCi/L	14	0.6× under
68	Ellijay	2.2 pCi/L	17	0.5× under
69	Holly Springs	2.2 pCi/L	48	0.5× under
70	Powder Springs	2.2 pCi/L	30	0.5× under
71	Dunwoody	2.1 pCi/L	107	0.5× under
72	Fair Oaks	2.1 pCi/L	13	0.5× under
73	Lilburn	2.1 pCi/L	17	0.5× under
74	Cumming	2.1 pCi/L	152	0.5× under
75	Helena	2.1 pCi/L	6	0.5× under
76	Roswell	2.1 pCi/L	171	0.5× under
77	Acworth	2.1 pCi/L	51	0.5× under
78	North Druid Hills	2.0 pCi/L	40	0.5× under
79	Greensboro	2.0 pCi/L	7	0.5× under
80	Berkeley Lake	2.0 pCi/L	29	0.5× under
81	Watkinsville	2.0 pCi/L	18	0.5× under
82	Douglasville	2.0 pCi/L	19	0.5× under
83	Fayetteville	1.9 pCi/L	13	0.5× under
84	Chattahoochee Hills	1.9 pCi/L	8	0.5× under
85	Suwanee	1.9 pCi/L	65	0.5× under
86	Mableton	1.9 pCi/L	35	0.5× under
87	Druid Hills	1.9 pCi/L	119	0.5× under
88	Gresham Park	1.9 pCi/L	22	0.5× under
89	Riverdale	1.9 pCi/L	6	0.5× under
90	Avondale Estates	1.9 pCi/L	7	0.5× under
91	Evans	1.8 pCi/L	12	0.5× under
92	Norcross	1.8 pCi/L	44	0.5× under
93	Woodstock	1.8 pCi/L	84	0.4× under
94	Johns Creek	1.8 pCi/L	168	0.4× under
95	Clarkston	1.8 pCi/L	14	0.4× under
96	Hiram	1.8 pCi/L	26	0.4× under
97	North Decatur	1.8 pCi/L	9	0.4× under
98	Smyrna	1.7 pCi/L	75	0.4× under
99	Atlanta	1.7 pCi/L	191	0.4× under
100	Decatur	1.7 pCi/L	56	0.4× under
101	Marietta	1.6 pCi/L	121	0.4× under
102	Hiawassee	1.6 pCi/L	12	0.4× under
103	Reed Creek	1.5 pCi/L	6	0.4× under
104	Duluth	1.4 pCi/L	61	0.4× under
105	Shannon	1.4 pCi/L	20	0.3× under
106	Scottdale	1.3 pCi/L	10	0.3× under
107	McDonough	1.3 pCi/L	6	0.3× under
108	East Newnan	1.3 pCi/L	17	0.3× under
109	Sugar Hill	1.2 pCi/L	29	0.3× under
110	Kennesaw	1.2 pCi/L	119	0.3× under
111	Martinez	1.2 pCi/L	6	0.3× under
112	Macon	1.2 pCi/L	10	0.3× under
113	Alpharetta	1.1 pCi/L	217	0.3× under
114	Panthersville	1.0 pCi/L	10	0.3× under
115	Grovetown	0.8 pCi/L	7	0.2× under

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