Adair, IL Radon Levels

Q: What EPA Radon Zone is Adair in?

Adair is in McDonough County, EPA Zone 1.

Q: Why are radon readings shown from areas near Adair?

No homeowner radon tests have been submitted for Adair yet, so readings from the closest cities and the McDonough County average are used as the best available indicator of local conditions. The EPA recommends testing every individual home.

Q: How much does radon mitigation cost in Adair?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

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

Adair, IL Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County McDonough County, IL

Zip Code 61411

Found in rural McDonough County in western Illinois, Adair represents classic agricultural community character with modest homes and farm properties scattered across the prairie landscape. The area's deep glacial deposits over Pennsylvanian bedrock contribute to moderate radon potential, though testing data remains limited for this small community. Residents in zip code 61411 should conduct individual radon testing to understand their specific exposure levels.

8.64

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 8.64 pCi/L, based on 11 tests from 9 nearby cities. No readings have been submitted for Adair yet, so the closest recorded data is shown as a benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Adair, IL Radon Mitigation

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

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Radon Readings Near Adair, IL

No homeowner tests have been submitted for Adair yet. The closest cities with user-submitted radon data are shown below — explore them to gauge local conditions. Radon varies by home, so testing is the only way to know your level.

City	Distance	Avg User Level	Readings
Cuba	18.7 mi	6.00 pCi/L	1
Stronghurst	33.7 mi	13.00 pCi/L	2
Dallas City	35.1 mi	9.00 pCi/L	1
Monmouth	37.1 mi	8.00 pCi/L	1
Knoxville	38.0 mi	8.00 pCi/L	1
Mapleton	44.1 mi	8.00 pCi/L	1
Lincolns New Salem	45.1 mi	8.00 pCi/L	1
Jacksonville	47.3 mi	9.00 pCi/L	2

McDonough County Radon Profile

Because of its underlying geology, McDonough County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Direct test data for McDonough County remains limited, so the closest neighboring readings are used here to represent the radon conditions homeowners are likely to encounter. As the second leading cause of lung cancer in the U.S., radon warrants testing in every McDonough County home regardless of zone or a neighbor's results.

Radon FAQ for Adair, IL

What EPA Radon Zone is Adair in?

Adair and the 61411 zip code are in McDonough 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.

Why are radon readings shown from areas near Adair?

No homeowner radon tests have been submitted for Adair yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the McDonough County average—are the best available indicator of local conditions until Adair homeowners submit their own results. The EPA still recommends testing every individual home, since levels can vary significantly from house to house.

How much does radon mitigation cost in Adair?

Radon mitigation in Adair 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 Adair?

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.