Northbrook, IL Radon Levels
Check local Northbrook radon levels and find certified testing and mitigation professionals to keep your home safe
Northbrook, IL Radon Facts
Northbrook in Cook County shows concerning radon levels, with an average of 6.2 pCi/L that significantly exceeds the EPA's 4.0 pCi/L action threshold. This northern suburban Chicago community's glacial till deposits over limestone bedrock create ideal conditions for radon production and migration into the predominantly full-basement homes built during the postwar suburban expansion. Residents in zip code 60062 should prioritize professional radon testing and mitigation systems.
Based on 5 user-submitted radon tests for homes in Northbrook, IL. The EPA recommends taking action at or above 4.0 pCi/L.
Northbrook, IL Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Need Radon Mitigation or Testing in Northbrook?
- 100% Free, No-Obligation Quotes
- Matches You with State-Licensed Cook County Pros
Northbrook, IL Radon Levels
User-submitted radon test readings from homes in the Northbrook area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 4 pCi/L | Northbrook, IL | 21-50 Years | Full Basement |
| 7 pCi/L | Northbrook, IL | 51-99 Years | Full Basement |
| 9 pCi/L | Northbrook, IL | 51-99 Years | Partial Basement |
Have a radon test result for Northbrook? Submit your reading to help other homeowners.
Radon Readings Near Northbrook, IL
Compare radon levels in Northbrook with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Deerfield | 3.2 mi | 4.00 pCi/L | 1 |
| Glenview | 4.2 mi | 4.33 pCi/L | 3 |
| Highland Park | 4.3 mi | 10.00 pCi/L | 3 |
| Wheeling | 4.5 mi | 5.00 pCi/L | 2 |
| Prospect Heights | 5.0 mi | 10.00 pCi/L | 1 |
| Mount Prospect | 6.4 mi | 5.33 pCi/L | 3 |
| Lincolnshire | 6.4 mi | 6.00 pCi/L | 1 |
| Buffalo Grove | 6.5 mi | 6.10 pCi/L | 10 |
Cook County Radon Profile
Cook County is mapped as EPA Radon Zone 2, where the local geology is predicted to produce moderate indoor screening levels between 2 and 4 pCi/L. Homeowner-submitted tests from 40 cities in Cook County average 6.44 pCi/L across 82 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Radon is the second leading cause of lung cancer in the United States, and a short-term test is the only way to confirm a specific home's level in Cook County.