Dekalb, IL Radon Levels
Check local Dekalb radon levels and find certified testing and mitigation professionals to keep your home safe
Dekalb, IL Radon Facts
Home to Northern Illinois University in DeKalb County, DeKalb shows concerning radon levels with an average of 8.75 pCi/L that significantly exceeds EPA recommendations. The area's glacial till deposits from Wisconsin glaciation create ideal conditions for radon production and migration into homes. Most properties in zip code 60115 feature full basements typical of Chicago Metro area construction, where radon readily accumulates.
Based on 4 user-submitted radon tests for homes in Dekalb, IL. The EPA recommends taking action at or above 4.0 pCi/L.
Dekalb, IL Radon Mitigation
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Dekalb, IL Radon Levels
User-submitted radon test readings from homes in the Dekalb area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 7 pCi/L | Dekalb, IL | 21-50 Years | — |
| 14 pCi/L | Dekalb, IL | 0-20 Years | Partial Basement |
| 6 pCi/L | Dekalb, IL | 0-20 Years | Full Basement |
| 8 pCi/L | Dekalb, IL | 100+ Years | Full Basement |
Have a radon test result for Dekalb? Submit your reading to help other homeowners.
Radon Readings Near Dekalb, IL
Compare radon levels in Dekalb with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Cortland | 3.6 mi | 5.00 pCi/L | 1 |
| Sycamore | 7.0 mi | 16.00 pCi/L | 2 |
| Kingston | 14.2 mi | 13.00 pCi/L | 1 |
| Rochelle | 16.4 mi | 13.00 pCi/L | 1 |
| Sugar Grove | 18.4 mi | 7.00 pCi/L | 1 |
| Plano | 19.6 mi | 10.00 pCi/L | 1 |
| Saint Charles | 21.0 mi | 18.00 pCi/L | 1 |
| Geneva | 22.8 mi | 7.00 pCi/L | 2 |
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.