Maine
Metric
Value
Rank
Average Radon Level
5.9
#13
Radon, a stealthy and naturally occurring radioactive gas, is prevalent across the United States, silently contributing to a significant share of lung cancer cases nationwide. With no smell, taste, or color, it quietly infiltrates our homes, originating from the decay of uranium in soil, rock, and water. Prolonged exposure to this silent menace has long-term health implications, making it essential to evaluate and monitor average radon levels in every state. The U.S. Environmental Protection Agency (EPA) recommends taking action if radon levels exceed 4 pCi/L in homes. To provide a comprehensive overview of radon distribution in the U.S, we've collated data from various states, ranking each according to their average radon level in picocuries per liter (pCi/L), a measure of radioactivity.
When evaluating the states with the highest average radon levels, Alaska grabs the top spot, with an average of 10.7 pCi/L. In the second position, we have South Dakota, exhibiting a high average radon level of 9.6 pCi/L. Next comes Pennsylvania, with a radon level of 8.6 pCi/L.Following closely, Ohio secures the fourth position with an average radon level of 7.8 pCi/L outperforming the fifth spot, Washington, which sees a 7.5 pCi/L radon level. Montana and Kentucky both present a joint average of 7.4 pCi/L of radon, posing significant health risks to their residents. Idaho's radon level is not far behind, standing at 7.3 pCi/L and surpassing Colorado's level of 6.8 pCi/L. Lastly, Iowa closes our top ten list, having an average radon level of 6.1 pCi/L which, although lower, still is above the EPA's recommended radon action level. States with the Highest Radon Levels:
Metric
Value
Rank
Average Radon Level
3.9
#30
Metric
Value
Rank
Average Radon Level
10.7
#1
Metric
Value
Rank
Average Radon Level
1.9
#46
Metric
Value
Rank
Average Radon Level
2.5
#39
Metric
Value
Rank
Average Radon Level
2.3
#43
Metric
Value
Rank
Average Radon Level
6.8
#9
Metric
Value
Rank
Average Radon Level
3.4
#36
Metric
Value
Rank
Average Radon Level
2.4
#41
Metric
Value
Rank
Average Radon Level
1.8
#47
Metric
Value
Rank
Average Radon Level
2.3
#44
Metric
Value
Rank
Average Radon Level
7.3
#8
Metric
Value
Rank
Average Radon Level
5.3
#17
Metric
Value
Rank
Average Radon Level
4.7
#22
Metric
Value
Rank
Average Radon Level
6.1
#10
Metric
Value
Rank
Average Radon Level
4.9
#20
Metric
Value
Rank
Average Radon Level
7.4
#7
Metric
Value
Rank
Average Radon Level
1.1
#49
Metric
Value
Rank
Average Radon Level
5.9
#13
Metric
Value
Rank
Average Radon Level
5.4
#16
Metric
Value
Rank
Average Radon Level
3.9
#31
Metric
Value
Rank
Average Radon Level
3.5
#35
Metric
Value
Rank
Average Radon Level
4.6
#23
Metric
Value
Rank
Average Radon Level
1.2
#48
Metric
Value
Rank
Average Radon Level
4.3
#26
Metric
Value
Rank
Average Radon Level
7.4
#6
Metric
Value
Rank
Average Radon Level
5.2
#18
Metric
Value
Rank
Average Radon Level
3.4
#37
Metric
Value
Rank
Average Radon Level
5.6
#15
Metric
Value
Rank
Average Radon Level
4.4
#24
Metric
Value
Rank
Average Radon Level
3.9
#32
Metric
Value
Rank
Average Radon Level
4.2
#28
Metric
Value
Rank
Average Radon Level
4.0
#29
Metric
Value
Rank
Average Radon Level
6.0
#12
Metric
Value
Rank
Average Radon Level
7.8
#4
Metric
Value
Rank
Average Radon Level
2.5
#40
Metric
Value
Rank
Average Radon Level
3.1
#38
Metric
Value
Rank
Average Radon Level
8.6
#3
Metric
Value
Rank
Average Radon Level
4.3
#27
Metric
Value
Rank
Average Radon Level
2.4
#42
Metric
Value
Rank
Average Radon Level
9.6
#2
Metric
Value
Rank
Average Radon Level
4.8
#21
Metric
Value
Rank
Average Radon Level
2.1
#45
Metric
Value
Rank
Average Radon Level
4.4
#25
Metric
Value
Rank
Average Radon Level
3.7
#33
Metric
Value
Rank
Average Radon Level
3.6
#34
Metric
Value
Rank
Average Radon Level
7.5
#5
Metric
Value
Rank
Average Radon Level
6.1
#11
Metric
Value
Rank
Average Radon Level
5.7
#14
Metric
Value
Rank
Average Radon Level
5.0
#19
Region ↕ | Average Radon Level ↕ |
---|---|
Alabama | 3.9 |
Alaska | 10.7 |
Arizona | 1.9 |
Arkansas | 2.5 |
California | 2.3 |
Colorado | 6.8 |
Connecticut | 3.4 |
Delaware | 2.4 |
Florida | 1.8 |
Georgia | 2.3 |
Idaho | 7.3 |
Illinois | 5.3 |
Indiana | 4.7 |
Iowa | 6.1 |
Kansas | 4.9 |
Kentucky | 7.4 |
Louisiana | 1.1 |
Maine | 5.9 |
Maryland | 5.4 |
Massachusetts | 3.9 |
Michigan | 3.5 |
Minnesota | 4.6 |
Mississippi | 1.2 |
Missouri | 4.3 |
Montana | 7.4 |
Nebraska | 5.2 |
Nevada | 3.4 |
New Hampshire | 5.6 |
New Jersey | 4.4 |
New Mexico | 3.9 |
New York | 4.2 |
North Carolina | 4.0 |
North Dakota | 6.0 |
Ohio | 7.8 |
Oklahoma | 2.5 |
Oregon | 3.1 |
Pennsylvania | 8.6 |
Rhode Island | 4.3 |
South Carolina | 2.4 |
South Dakota | 9.6 |
Tennessee | 4.8 |
Texas | 2.1 |
Utah | 4.4 |
Vermont | 3.7 |
Virginia | 3.6 |
Washington | 7.5 |
West Virginia | 6.1 |
Wisconsin | 5.7 |
Wyoming | 5.0 |