Long-term kit
RL416 long-term radon test kit, lab fee included
- Lab fee included
Method: Alpha track
In home: 90 days to 12 months
Locations and reports
Radon Levels in Daniels County, Montana
EPA puts Daniels County in Zone 1, its highest radon zone, and only 3 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
75.7%
Sheridan County
- Sheridan
- 75.7%
- Valley
- 50.0%
2 of 3 neighbours have 30+ tests, 2006 to 2015
Nearest county
75.7%
Sheridan County, 48 miles
- Sheridan
- 75.7%
- Montana
- 47.4%
Share at 4+ pCi/L, 70 tests, 2006 to 2015
Ground above low
100.0%
Level with Montana
- Daniels
- 100.0%
- Montana
- 100.0%
Share of land USGS rates moderate or high potential
Tests reported
4
Too few for a share
- Daniels
- 4
- Needed
- 30
2006 to 2015, laboratory
EPA radon zone
Zone 1
Highest potential
- Zone 1
- 2
- 3
1 highest, 3 lowest
EPA predicts over 4 pCi/L indoors
Read a result for Daniels 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
Daniels County, At a glance
Daniels County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Daniels County in
USGS geologic potential: High across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Daniels County, 2008 to 2017, laboratory
CDC holds 3 reported tests for Daniels County over the 2008 to 2017 laboratory totals, with a median of 2.5 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Daniels County beside the counties around it is how this page reads it.
What these figures count
Only 3 tests were reported to CDC for Daniels 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).
Daniels County, Compared
Daniels County radon figures, compared
Calculated by Radon411CDC's largest figure for Daniels County rests on 4 tests over the 2006 to 2015 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 25.0 points and no rank or comparison is drawn from it. Results reached as high as 2.6 pCi/L, with a middle value of 2.3 pCi/L.
Of the counties bordering it, 2 have a figure over the 2006 to 2015 laboratory totals: Sheridan County reported the largest share at or above 4 pCi/L, 75.7%, and Valley County the smallest, 50.0%. Farther out, Richland County (83 miles away) at 75.0%, Dawson County (109 miles away) at 47.3% and Fergus County (200 miles away) at 72.2% have figures too. Pooled across 52 Montana counties, 47.4% of reported tests reached that level; across every county in the country with a figure, 36.3%.
Statewide for the same period, Sheridan County reported the highest share (75.7%) and Hill County the lowest (35.0%). EPA's 1993 map puts Daniels County in Zone 1, the map's highest label: a predicted county average above 4 pCi/L. USGS geology rates 100% of the county's land high radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Daniels County, Geology
The ground under Daniels County
PredictedUSGS's geologic map puts all of Daniels County's mapped land in one class: high radon potential. All of it lies in the area the map calls Great Plains (Glaciated), to which USGS gives a radon index of 13, in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Great Plains (Glaciated) | Glacial deposits derived from Cretaceous shales containing higher than average amounts of uranium. | High | 13 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Daniels County beside the ground around it
Daniels County has more high-potential ground than Montana as a whole: 100% of its land against 78.5%. Of the 3 counties that border it, none has as large a share of high-potential ground; Roosevelt County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Daniels County, Local resources
Radon testing and mitigation in Daniels County
- Radon Control ProgramRadon Control Program, run by Montana DEQ, does not license radon professionals and offers free or discounted test kits, and answers questions about testing and mitigation in Montana.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
Energy Bureau staff manage the radon information toll-free hotline and distribute subsidized radon test kits to Montana residents.
- Compare kits
- See the Montana directoryNo professionals are listed in Montana yet. The state program can point you to registered testers and mitigators.
What Montana's program says
- Phone
- 1-800-546-0483
- Licensing of radon professionals
Montana DEQ does not certify or require proof of certification for the contractors listed.
What it means
Daniels County, Questions
Questions about radon in Daniels County
Are radon levels high in Daniels County?
Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Daniels County, Montana were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.5 pCi/L. Of the counties bordering it, 2 have a figure over the 2006 to 2015 laboratory totals: Sheridan County reported the largest share at or above 4 pCi/L, 75.7%, and Valley County the smallest, 50.0%.
Which counties border Daniels County?
Daniels County borders 3 counties: Roosevelt County, Sheridan County and Valley County.
Products
Daniels County, Products
Testing a home in Daniels County
No CDC figure names Daniels County; the nearest county with one, Sheridan County (48 miles away), reported 75.7% of its tests at or above 4 pCi/L over the 2006 to 2015 laboratory totals, the only reading nearby until a test of this home. In Zone 1 the year-round level in Daniels County is the one to know: a long-term test (more than 90 days) or a monitor, with a short-term kit for a first answer.
Test kits and monitors3
See every kit and monitor
MonitorAEGTEST
HOUND-1011 rechargeable radon detector with a screen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
First reading: Within 6 hours
Short-term kit
Air Chek Short-Term radon test kit you hang, lab fee included
- Lab fee included
In home: 72 to 168 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Daniels County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Daniels County
Explore
Daniels County, Bordering counties
Counties bordering Daniels County
Calculated by Radon411- Radon levels in Roosevelt CountyEPA zone 1
93.8%at or above 4 pCi/L
Median 9.3 pCi/L · 16 tests
- Radon levels in Sheridan CountyEPA zone 1
75.7%at or above 4 pCi/L
Median 6.3 pCi/L · 70 tests
- Radon levels in Valley CountyEPA zone 1
50.0%at or above 4 pCi/L
Median 4.2 pCi/L · 40 tests
Daniels County, Cities and towns
Cities and towns in Daniels County
About 1,612 people live in Daniels County by the Census Bureau's estimate for July 1, 2025, 38 fewer than in 2020 (−2.3%). Spread over its land, that is 1.1 people to the square mile. Scobey alone is home to 972 of them, 60.3% of the total. Together its 2 incorporated places hold 63.9% of those residents; the other 36.1% live outside any of them. Reported testing is thin here: 4 tests over 2006 to 2015, or 2.5 for every 1,000 residents (2025 estimate), where Montana as a whole comes to 7.5.
From Scobey to Flaxville, CDC publishes no figure by town: each reads Daniels County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Scobey | 972 | −2.2% | 60.3% |
| Flaxville | 58 | −1.7% | 3.6% |
2 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).
Daniels County, Homes
Homes in Daniels County
Daniels County is a place of houses on their own lots: 87% of its 1,130 homes are detached single-family houses, against 69% across Montana. The homes are older than Montana's as a whole: half were built before 1957 (1980 for Montana), and 56% date from before 1960. Owners live in 80% of the occupied homes (Montana: 69%), so for most households a test and a fix are their own to order.
| Homes | Daniels County | Montana |
|---|---|---|
| Housing units | 1,130 | 522,939 |
| Detached houses | 87% | 69% |
| In buildings of 5 or more | 4% | 9% |
| Mobile homes | 5% | 10% |
| Built before 1960 | 56% | 26% |
| Built since 2000 | 6% | 27% |
| Middle year built | 1957 | 1980 |
| Owner-occupied | 80% | 69% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.