Clare, IL Radon Levels

Q: What EPA Radon Zone is Clare in?

Clare is in Dekalb County, EPA Zone 1.

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

No homeowner radon tests have been submitted for Clare yet, so readings from the closest cities and the Dekalb 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 Clare?

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

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

Clare, IL Radon Facts

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

County Dekalb County, IL

Zip Code 60111

Part of the Chicago Metro's outer reaches in DeKalb County, Clare sits on glacial till deposits from the Wisconsin glaciation that create favorable conditions for radon production. Testing data for zip code 60111 is currently limited, though the region's geological characteristics suggest potential for elevated levels. Homeowners should prioritize radon testing, particularly given the area's predominantly basement-equipped housing stock typical of northern Illinois suburbs.

10.63

pCi/L area average

Above EPA Action Level

Dekalb County average: 10.63 pCi/L, based on 8 user-submitted tests across 4 cities in the county. No homeowner readings have been submitted for Clare itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Clare, 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 Clare, IL

No homeowner tests have been submitted for Clare 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
Sycamore	7.2 mi	16.00 pCi/L	2
Kingston	7.4 mi	13.00 pCi/L	1
Dekalb	8.4 mi	8.75 pCi/L	4
Cortland	9.5 mi	5.00 pCi/L	1
Rochelle	13.5 mi	13.00 pCi/L	1
Belvidere	17.4 mi	4.50 pCi/L	2
Marengo	19.9 mi	5.50 pCi/L	2
Stillman Valley	19.9 mi	5.00 pCi/L	1

Dekalb County Radon Profile

Because of its underlying geology, Dekalb County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Homeowner-submitted tests from 4 cities in Dekalb County average 10.63 pCi/L across 8 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Dekalb County home regardless of zone or a neighbor's results.

Radon FAQ for Clare, IL

What EPA Radon Zone is Clare in?

Clare and the 60111 zip code are in Dekalb 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 Clare?

No homeowner radon tests have been submitted for Clare yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Dekalb County average—are the best available indicator of local conditions until Clare 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 Clare?

Radon mitigation in Clare 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 Clare?

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.