Short-term kit
RA100 short-term liquid scintillation radon test kit
- Lab fee extra
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in Weakley County, Tennessee
EPA puts Weakley County in Zone 3, its lowest radon zone, and only 16 radon tests from it are on file with CDC (2008 to 2017, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Highest bordering
16.7%
Henry County
- Henry
- 16.7%
- Gibson
- 5.3%
3 of 6 neighbours have 30+ tests, 2008 to 2017
Nearest county
16.7%
Henry County, 23 miles
- Henry
- 16.7%
- Tennessee
- 33.3%
Share at 4+ pCi/L, 60 tests, 2008 to 2017
Ground above low
None
69.5 pts below Tennessee
- Weakley
- 0.0%
- Tennessee
- 69.5%
Share of land USGS rates moderate or high potential
Tests reported
23
Too few for a share
- Weakley
- 23
- Needed
- 30
2005 to 2014, laboratory
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for Weakley County
Starts at EPA's action level
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 4.0 pCi/L
At or above 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is at or above 4 pCi/L. EPA recommends fixing a home when the radon level is 4 pCi/L or higher.
The data
Weakley County, At a glance
Weakley County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Weakley County, 2008 to 2017, laboratory
CDC holds 16 reported tests for Weakley County over the 2008 to 2017 laboratory totals, with a median of 1.1 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Weakley County beside the counties around it is how this page reads it.
What these figures count
Only 16 tests were reported to CDC for Weakley County over 2008 to 2017 (laboratory totals), and tests are often run on homes being sold or already suspected of a problem: so few describe neither the county nor this house.
Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Weakley County, Compared
Weakley County radon figures, compared
Calculated by Radon411CDC's largest figure for Weakley County rests on 23 tests over the 2005 to 2014 laboratory totals, 2 of them at or above 4 pCi/L, so each test moves its share by 4.3 points and no rank or comparison is drawn from it. Results reached as high as 10.2 pCi/L, with a middle value of 0.2 pCi/L.
Of the counties bordering it, 3 have a figure over the 2008 to 2017 laboratory totals: Henry County reported the largest share at or above 4 pCi/L, 16.7%, and Gibson County the smallest, 5.3%, with Obion County at 11.1% between. Farther out, Benton County (40 miles away) at 33.3%, Madison County (48 miles away) at 8.7% and Henderson County (48 miles away) at 16.7% have figures too. Pooled across 95 Tennessee counties, 33.3% of reported tests reached that level; across every county in the country with a figure, 35.7%.
Statewide for the same period, Jefferson County reported the highest share (56.8%) and Chester County the lowest (0.0%). EPA's 1993 map puts Weakley County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 100% of the county's land low radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Weakley County, Geology
The ground under Weakley County
PredictedUSGS's geologic map puts all of Weakley County's mapped land in one class: low radon potential. All of it lies in the area the map calls Loess-Covered Coastal Plain, to which USGS gives a radon index of 8, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Loess-Covered Coastal Plain | Cretaceous and younger marine and fluvial sand, clay, and marl covered with loess. | Low | 8 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Weakley County beside the ground around it
Across Tennessee 47.2% of the land is rated high; none of Weakley County's is. Of the 6 counties that border it, 1 has more high-potential ground, Henry County the most at 8.1%.
The map rates the ground, not the air in any home.
Local help
Weakley County, Local resources
Radon testing and mitigation in Weakley County
- Tennessee Radon ProgramTennessee Radon Program, run by Department of Environment & Conservation, offers free or discounted test kits, and answers questions about testing and mitigation in Tennessee.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
The Tennessee Radon Program provides free radon test kits and information assistance to residents, while also providing training opportunities to radon professionals across the state.
- Compare kits
- Professionals in Tennessee1 professional is listed in Tennessee.
What Tennessee's program says
- Phone
- 1-800-232-1139
- TDEC.Radon@tn.gov
What it means
Weakley County, Questions
Questions about radon in Weakley County
Are radon levels high in Weakley County?
Over the 2008 to 2017 laboratory totals, 12.5% of the radon tests reported to CDC for Weakley County, Tennessee were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.1 pCi/L. Of the counties bordering it, 3 have a figure over the 2008 to 2017 laboratory totals: Henry County reported the largest share at or above 4 pCi/L, 16.7%, and Gibson County the smallest, 5.3%, with Obion County at 11.1% between.
Which counties border Weakley County?
Weakley County borders 6 counties: Graves County, KY, Gibson County, TN, Henry County, TN, Obion County, TN, Hickman County, KY and Carroll County, TN.
Products
Weakley County, Products
Testing a home in Weakley County
No CDC figure names Weakley County; the nearest county with one, Henry County (23 miles away), reported 16.7% of its tests at or above 4 pCi/L over the 2008 to 2017 laboratory totals, the only reading nearby until a test of this home. Zone 3 is the lowest label, yet homes at or above 4 pCi/L occur in every zone: a short-term kit (2 to 90 days) is the quick first check in Weakley County.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
MonitorForensics Detectors
FD-65-RADON rechargeable radon detector with a color screen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
First reading: Within 6 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Weakley County, Bordering counties
Counties bordering Weakley County
Calculated by Radon411- Radon levels in Carroll County, TNEPA zone 3
20.0%at or above 4 pCi/L
Median 1.0 pCi/L · 25 tests
- Radon levels in Henry County, TNEPA zone 3
16.7%at or above 4 pCi/L
Median 1.6 pCi/L · 60 tests
- Radon levels in Obion County, TNEPA zone 3
11.1%at or above 4 pCi/L
Median 1.8 pCi/L · 36 tests
- Radon levels in Graves County, KYEPA zone 3
8.3%at or above 4 pCi/L
Median 1.5 pCi/L · 24 tests
- Radon levels in Gibson County, TNEPA zone 3
5.3%at or above 4 pCi/L
Median 1.0 pCi/L · 57 tests
- Radon levels in Hickman County, KYEPA zone 3
0.0%at or above 4 pCi/L
Median 0.1 pCi/L · 7 tests
Weakley County, Cities and towns
Cities and towns in Weakley County
The Census Bureau estimates 33,261 residents in Weakley County for July 1, 2025, 353 more than in 2020 (+1.1%). That works out to 57 people per square mile of land. Its largest town, Martin, has 11,060 residents, 33.3% of the total. Reported testing is thin here: 23 tests over 2005 to 2014, or 0.7 for every 1,000 residents (2025 estimate), where Tennessee as a whole comes to 3.1.
From Martin to Sharon, CDC publishes no figure by town: each reads Weakley County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Martin | 11,060 | +2.1% | 33.3% |
| McKenzieextends beyond Weakley County | 5,632 | +1.9% | Counted whole |
| Dresden | 2,911 | −2.5% | 8.8% |
| Greenfield | 2,020 | −0.2% | 6.1% |
| Gleason | 1,353 | −0.2% | 4.1% |
| Sharon | 919 | −0.9% | 2.8% |
6 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025). A place that extends beyond Weakley County is counted whole, so it has no share.
Weakley County, Homes
Homes in Weakley County
Of Weakley County's 15,028 homes, 69% are detached houses, against 68% across Tennessee; 14% are mobile homes. The homes are older than Tennessee's as a whole: half were built before 1978 (1986 for Tennessee), and 21% date from before 1960. 66% of occupied homes are lived in by their owner (Tennessee: 67%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Weakley County | Tennessee |
|---|---|---|
| Housing units | 15,028 | 3,095,472 |
| Detached houses | 69% | 68% |
| In buildings of 5 or more | 5% | 14% |
| Mobile homes | 14% | 8% |
| Built before 1960 | 21% | 18% |
| Built since 2000 | 18% | 29% |
| Middle year built | 1978 | 1986 |
| Owner-occupied | 66% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.