Hillsborough, NC Radon Levels
Check local Hillsborough radon levels and find certified testing and mitigation professionals to keep your home safe
Hillsborough, NC Radon Facts
Part of Orange County in the Durham Metro area, Hillsborough sits on the Carolina Piedmont's crystalline bedrock and clay soils. The community shows an average radon level of 3.0 pCi/L from available testing in zip code 27278, which falls within EPA's recommended range but still warrants individual property testing.
Based on 1 user-submitted radon test for homes in Hillsborough, NC. The EPA recommends taking action at or above 4.0 pCi/L.
Hillsborough, NC Radon Mitigation
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Hillsborough, NC Radon Levels
User-submitted radon test readings from homes in the Hillsborough area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 3 pCi/L | Hillsborough, NC | 0-20 Years | No Basement/All Crawl Space |
Have a radon test result for Hillsborough? Submit your reading to help other homeowners.
Radon Readings Near Hillsborough, NC
Compare radon levels in Hillsborough with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Efland | 5.5 mi | 5.00 pCi/L | 1 |
| Chapel Hill | 11.2 mi | 3.00 pCi/L | 1 |
| Rougemont | 15.5 mi | 9.00 pCi/L | 1 |
| Stem | 22.3 mi | 3.00 pCi/L | 1 |
| Yanceyville | 26.0 mi | 4.00 pCi/L | 1 |
| Cary | 26.2 mi | 5.00 pCi/L | 4 |
| Gibsonville | 26.8 mi | 6.00 pCi/L | 1 |
| Apex | 28.1 mi | 3.50 pCi/L | 2 |
Orange County Radon Profile
Orange County is classified as EPA Radon Zone 3, the lowest predicted-risk tier, with modeled indoor screening averages below 2 pCi/L. Homeowner-submitted tests from 3 cities in Orange County average 3.67 pCi/L across 3 tests — below the EPA's 4 pCi/L action level, though radon varies sharply from home to home. 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 Orange County.