Texas Cities Ranked by Indoor Radon Levels

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

Lubbock has the highest measured indoor radon in Texas at 4.9 pCi/L, based on Airthings measurements across 133 cities.

Updated August 16, 2026

Highest city

4.9pCi/L

Lubbock

Texas city average

1.0pCi/L

across 133 cities

Above action level

1/ 133

cities

Texas Cities Ranked by Indoor Radon Levels
#	Location	Avg level	Monitors	vs action level
1	Lubbock	4.9 pCi/L	18	1.2× over
✓ Below EPA action level (4 pCi/L)
2	Shavano Park	3.2 pCi/L	20	0.8× under
3	Wolfforth	2.8 pCi/L	18	0.7× under
4	Farmers Branch	2.1 pCi/L	15	0.5× under
5	Melissa	2.1 pCi/L	7	0.5× under
6	Manchaca	2.0 pCi/L	11	0.5× under
7	University Park	2.0 pCi/L	40	0.5× under
8	Arlington	2.0 pCi/L	7	0.5× under
9	Pearland	2.0 pCi/L	15	0.5× under
10	Live Oak	2.0 pCi/L	8	0.5× under
11	Hollywood Park	1.8 pCi/L	21	0.5× under
12	Wells Branch	1.8 pCi/L	24	0.5× under
13	Irving	1.8 pCi/L	13	0.4× under
14	Lost Creek	1.7 pCi/L	26	0.4× under
15	Waxahachie	1.7 pCi/L	11	0.4× under
16	Weatherford	1.7 pCi/L	10	0.4× under
17	Sienna Plantation	1.6 pCi/L	7	0.4× under
18	Rockwall	1.6 pCi/L	8	0.4× under
19	Carrollton	1.6 pCi/L	17	0.4× under
20	Murphy	1.5 pCi/L	7	0.4× under
21	Round Rock	1.5 pCi/L	24	0.4× under
22	Addison	1.5 pCi/L	50	0.4× under
23	Garland	1.5 pCi/L	10	0.4× under
24	Buda	1.4 pCi/L	11	0.4× under
25	Lago Vista	1.4 pCi/L	10	0.4× under
26	Richardson	1.4 pCi/L	28	0.4× under
27	Dallas	1.4 pCi/L	50	0.4× under
28	Rowlett	1.4 pCi/L	11	0.3× under
29	Canyon Lake	1.4 pCi/L	18	0.3× under
30	Leon Valley	1.3 pCi/L	8	0.3× under
31	New Braunfels	1.3 pCi/L	8	0.3× under
32	El Paso	1.3 pCi/L	9	0.3× under
33	Denton	1.3 pCi/L	12	0.3× under
34	Plano	1.2 pCi/L	23	0.3× under
35	Highland Park	1.2 pCi/L	50	0.3× under
36	Frisco	1.2 pCi/L	73	0.3× under
37	Jollyville	1.2 pCi/L	41	0.3× under
38	Shady Hollow	1.2 pCi/L	34	0.3× under
39	Lewisville	1.1 pCi/L	13	0.3× under
40	Pflugerville	1.1 pCi/L	33	0.3× under
41	McKinney	1.1 pCi/L	21	0.3× under
42	Timberwood Park	1.1 pCi/L	11	0.3× under
43	Watauga	1.0 pCi/L	13	0.3× under
44	Austin	1.0 pCi/L	226	0.3× under
45	Flower Mound	1.0 pCi/L	12	0.2× under
46	Rollingwood	1.0 pCi/L	46	0.2× under
47	Prosper	0.9 pCi/L	40	0.2× under
48	Onion Creek	0.9 pCi/L	14	0.2× under
49	Grapevine	0.9 pCi/L	10	0.2× under
50	Brushy Creek	0.9 pCi/L	29	0.2× under
51	Serenada	0.9 pCi/L	12	0.2× under
52	The Colony	0.9 pCi/L	20	0.2× under
53	West Lake Hills	0.9 pCi/L	44	0.2× under
54	Allen	0.9 pCi/L	37	0.2× under
55	Lakeway	0.9 pCi/L	11	0.2× under
56	Colleyville	0.9 pCi/L	9	0.2× under
57	Granite Shoals	0.9 pCi/L	6	0.2× under
58	Southlake	0.9 pCi/L	14	0.2× under
59	Coppell	0.8 pCi/L	24	0.2× under
60	Fairview	0.8 pCi/L	18	0.2× under
61	Hornsby Bend	0.8 pCi/L	8	0.2× under
62	Little Elm	0.8 pCi/L	21	0.2× under
63	Bryan	0.8 pCi/L	6	0.2× under
64	Edinburg	0.8 pCi/L	6	0.2× under
65	Terrell Hills	0.8 pCi/L	8	0.2× under
66	Magnolia	0.8 pCi/L	10	0.2× under
67	Hunters Creek Village	0.8 pCi/L	10	0.2× under
68	Roanoke	0.8 pCi/L	7	0.2× under
69	Anderson Mill	0.7 pCi/L	31	0.2× under
70	Midland	0.7 pCi/L	12	0.2× under
71	Piney Point Village	0.7 pCi/L	9	0.2× under
72	Cedar Park	0.7 pCi/L	21	0.2× under
73	Fulshear	0.7 pCi/L	8	0.2× under
74	Greenville	0.7 pCi/L	12	0.2× under
75	Argyle	0.7 pCi/L	8	0.2× under
76	Celina	0.7 pCi/L	8	0.2× under
77	Atascocita	0.7 pCi/L	9	0.2× under
78	San Antonio	0.7 pCi/L	30	0.2× under
79	Pecan Grove	0.7 pCi/L	7	0.2× under
80	Sugar Land	0.7 pCi/L	13	0.2× under
81	Barton Creek	0.7 pCi/L	8	0.2× under
82	Georgetown	0.7 pCi/L	24	0.2× under
83	Missouri City	0.7 pCi/L	6	0.2× under
84	Dripping Springs	0.6 pCi/L	33	0.2× under
85	Trophy Club	0.6 pCi/L	6	0.2× under
86	Bunker Hill Village	0.6 pCi/L	29	0.2× under
87	San Marcos	0.6 pCi/L	12	0.2× under
88	Corpus Christi	0.6 pCi/L	10	0.2× under
89	Fort Worth	0.6 pCi/L	33	0.2× under
90	Bee Cave	0.6 pCi/L	25	0.1× under
91	Jersey Village	0.6 pCi/L	10	0.1× under
92	Crowley	0.6 pCi/L	7	0.1× under
93	Harlingen	0.6 pCi/L	6	0.1× under
94	Helotes	0.6 pCi/L	15	0.1× under
95	Leander	0.6 pCi/L	35	0.1× under
96	Friendswood	0.6 pCi/L	14	0.1× under
97	Fair Oaks Ranch	0.6 pCi/L	6	0.1× under
98	Cypress	0.6 pCi/L	18	0.1× under
99	Bertram	0.5 pCi/L	10	0.1× under
100	Keller	0.5 pCi/L	17	0.1× under
101	Webster	0.5 pCi/L	8	0.1× under
102	Mission Bend	0.5 pCi/L	20	0.1× under
103	White Settlement	0.5 pCi/L	12	0.1× under
104	Boerne	0.5 pCi/L	9	0.1× under
105	The Woodlands	0.5 pCi/L	24	0.1× under
106	Alamo Heights	0.5 pCi/L	7	0.1× under
107	The Hills	0.5 pCi/L	14	0.1× under
108	Hutto	0.5 pCi/L	15	0.1× under
109	Katy	0.5 pCi/L	26	0.1× under
110	Oak Cliff Place	0.5 pCi/L	16	0.1× under
111	Wylie	0.5 pCi/L	7	0.1× under
112	Greatwood	0.5 pCi/L	6	0.1× under
113	Iowa Colony	0.5 pCi/L	9	0.1× under
114	Kyle	0.5 pCi/L	11	0.1× under
115	Jonestown	0.4 pCi/L	10	0.1× under
116	Houston	0.4 pCi/L	124	0.1× under
117	Shenandoah	0.4 pCi/L	10	0.1× under
118	Bellaire	0.4 pCi/L	22	0.1× under
119	Fifth Street	0.4 pCi/L	10	0.1× under
120	Southside Place	0.4 pCi/L	6	0.1× under
121	Hudson	0.4 pCi/L	11	0.1× under
122	Conroe	0.4 pCi/L	8	0.1× under
123	Castle Hills	0.4 pCi/L	31	0.1× under
124	Meadows Place	0.4 pCi/L	7	0.1× under
125	Spring	0.4 pCi/L	18	0.1× under
126	Spring Valley	0.4 pCi/L	17	0.1× under
127	Hudson Bend	0.4 pCi/L	6	0.1× under
128	Tomball	0.4 pCi/L	24	0.1× under
129	Hedwig Village	0.3 pCi/L	13	0.1× under
130	Cinco Ranch	0.3 pCi/L	19	0.1× under
131	College Station	0.3 pCi/L	7	0.1× under
132	West University Place	0.3 pCi/L	35	0.1× under
133	Panorama Village	0.3 pCi/L	6	0.1× under

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