Champaign, IL Radon Levels
Check local Champaign radon levels and find certified testing and mitigation professionals to keep your home safe
Champaign, IL Radon Facts
University city Champaign in Champaign County records an average radon level of 6.0 pCi/L, exceeding the EPA action level and reflecting the challenging radon conditions common throughout central Illinois. The community's diverse housing stock, from historic neighborhoods near the University of Illinois to modern suburban developments, predominantly features full basements where radon can accumulate. Residents across zip codes 61820-61822 should prioritize radon testing and mitigation given these elevated regional levels and the area's glacial till geology.
Based on 3 user-submitted radon tests for homes in Champaign, IL. The EPA recommends taking action at or above 4.0 pCi/L.
Champaign, IL Radon Mitigation
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Champaign, IL Radon Levels
User-submitted radon test readings from homes in the Champaign area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 7 pCi/L | Champaign, IL | 100+ Years | Partial Basement |
| 6 pCi/L | Champaign, IL | 51-99 Years | No Basement/All Crawl Space |
Have a radon test result for Champaign? Submit your reading to help other homeowners.
Radon Readings Near Champaign, IL
Compare radon levels in Champaign with the closest nearby cities that have user-submitted test data.
Champaign County Radon Profile
Because of its underlying geology, Champaign 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 5 cities in Champaign County average 10.00 pCi/L across 7 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 Champaign County home regardless of zone or a neighbor's results.