Johnstown, PA Radon Levels
Check local Johnstown radon levels and find certified testing and mitigation professionals to keep your home safe
Johnstown, PA Radon Facts
Located in Cambria County within the Appalachian Mountains of southwestern Pennsylvania, Johnstown's housing stock includes many early-to-mid 20th century homes with full basements built over fractured sedimentary bedrock. The area's average radon level of 7.33 pCi/L significantly exceeds the EPA action level of 4.0 pCi/L, indicating that radon mitigation systems are recommended for most homes in the 15901 zip code.
Based on 3 user-submitted radon tests for homes in Johnstown, PA. The EPA recommends taking action at or above 4.0 pCi/L.
Johnstown, PA 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 Johnstown?
- 100% Free, No-Obligation Quotes
- Matches You with State-Licensed Cambria County Pros
Johnstown, PA Radon Levels
User-submitted radon test readings from homes in the Johnstown area.
| Radon Level | City | Home Age | Foundation |
|---|---|---|---|
| 5 pCi/L | Johnstown, PA | 51-99 Years | Full Basement |
| 10 pCi/L | Johnstown, PA | — | Full Basement |
| 7 pCi/L | Johnstown, PA | 21-50 Years | Full Basement |
Have a radon test result for Johnstown? Submit your reading to help other homeowners.
Radon Readings Near Johnstown, PA
Compare radon levels in Johnstown with the closest nearby cities that have user-submitted test data.
| City | Distance | Avg User Level | Readings |
|---|---|---|---|
| Blairsville | 19.8 mi | 15.00 pCi/L | 1 |
| Schellsburg | 23.8 mi | 20.00 pCi/L | 1 |
| Duncansville | 25.6 mi | 3.00 pCi/L | 1 |
| Hollidaysburg | 29.3 mi | 7.00 pCi/L | 1 |
| Altoona | 29.5 mi | 6.00 pCi/L | 2 |
| Martinsburg | 30.8 mi | 15.00 pCi/L | 1 |
| Marion Center | 31.8 mi | 3.00 pCi/L | 1 |
| Greensburg | 33.5 mi | 6.50 pCi/L | 2 |
Cambria County Radon Profile
EPA mapping assigns Cambria 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 1 city in Cambria County average 7.33 pCi/L across 3 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 Cambria County home regardless of zone or a neighbor's results.