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Dayton, OH Radon Levels

Check local Dayton radon levels and find certified testing and mitigation professionals to keep your home safe


Dayton, OH Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Montgomery County, OH
Zip Code 45400
Avg. User Level 20.00 pCi/L
User Tests 1

Based in Greene County as Ohio's aviation hub, Dayton shows an average radon level of 20.0 pCi/L from available testing data, significantly exceeding the EPA action level of 4.0 pCi/L. The region's glacial till deposits over limestone bedrock create favorable conditions for radon gas migration and accumulation. Homeowners across zip codes 45430-45440 should prioritize testing and mitigation given these elevated readings.

20.00
pCi/L average
Above EPA Action Level

Based on 1 user-submitted radon test for homes in Dayton, OH. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

Dayton, OH Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

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Dayton, OH Radon Levels

User-submitted radon test readings from homes in the Dayton area.

Radon LevelCityHome AgeFoundation
20 pCi/L Dayton, OH 51-99 Years Partial Basement

Have a radon test result for Dayton? Submit your reading to help other homeowners.

Radon FAQ for Dayton, OH

What is the average radon level in Dayton, OH?
Based on 1 user-submitted test, the average radon level in Dayton is 20.00 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.
What EPA Radon Zone is Dayton in?
Dayton and the 45400 zip code are in Montgomery County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.
How much does radon mitigation cost in Dayton?
Radon mitigation in Dayton typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.
Should I test for radon if I'm buying a home in Dayton?
Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in Ohio

Cities in Ohio with the most user-submitted radon test data, ranked by number of submissions.

CityAvg User Radon LevelSubmissions
Marietta 8.00 pCi/L 5
Cincinnati 5.20 pCi/L 5
Hilliard 11.75 pCi/L 4
Wilmington 5.25 pCi/L 4
Newark 15.00 pCi/L 3
Athens 11.33 pCi/L 3
Findlay 10.33 pCi/L 3
Perrysburg 9.67 pCi/L 3
Powell 8.33 pCi/L 3
Columbus 6.00 pCi/L 3