Darien, IL Radon Levels
Check local Darien radon levels and find certified testing and mitigation professionals to keep your home safe
Darien, IL Radon Facts
Chicago Metro suburb in DuPage County shows an average radon level of 5.0 pCi/L, exceeding the EPA action threshold due to the area's glacial till deposits over limestone bedrock. The community's predominantly single-family homes built between the 1950s and 1990s typically feature full basements where radon accumulates readily. Residents of zip code 60561 should consider radon testing and potential mitigation given this elevated reading and the geological conditions favoring radon production.
Based on 1 user-submitted radon test for homes in Darien, IL. The EPA recommends taking action at or above 4.0 pCi/L.
Darien, IL Radon Mitigation
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Darien, IL Radon Levels
User-submitted radon test readings from homes in the Darien area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 5 pCi/L | Darien, IL | 51-99 Years | Full Basement |
Have a radon test result for Darien? Submit your reading to help other homeowners.
Radon Readings Near Darien, IL
Compare radon levels in Darien with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Westmont | 2.0 mi | 4.00 pCi/L | 1 |
| Willowbrook | 2.4 mi | 6.00 pCi/L | 1 |
| Lemont | 2.5 mi | 16.00 pCi/L | 1 |
| Downers Grove | 3.2 mi | 14.00 pCi/L | 2 |
| Woodridge | 3.6 mi | 5.00 pCi/L | 1 |
| Willow Springs | 5.3 mi | 5.50 pCi/L | 2 |
| Hinsdale | 5.5 mi | 5.00 pCi/L | 1 |
| Western Springs | 6.0 mi | 7.00 pCi/L | 1 |
Dupage County Radon Profile
EPA mapping assigns Dupage County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Homeowner-submitted tests from 25 cities in Dupage County average 6.98 pCi/L across 45 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 Dupage County home regardless of zone or a neighbor's results.