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Greeley, CO Radon Levels

Check local Greeley radon levels and find certified testing and mitigation professionals to keep your home safe


Greeley, CO Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)
County Weld County, CO
Zip Code 80631
Avg. User Level 4.70 pCi/L
User Tests 3

The county seat of Weld County in Colorado's northern plains, Greeley reports radon levels averaging 4.67 pCi/L, exceeding the EPA's 4.0 pCi/L action threshold. The area's underlying sedimentary geology and uranium-bearing formations contribute to elevated radon potential throughout the region. Residents across zip codes 80631 and 80634 should consider radon mitigation if testing reveals levels above 4.0 pCi/L, particularly in homes with basement living spaces.

4.70
pCi/L average
Above EPA Action Level

Based on 3 user-submitted radon tests for homes in Greeley, CO. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

Greeley, CO Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

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Greeley, CO Radon Levels

User-submitted radon test readings from homes in the Greeley area.

Radon LevelCityHome AgeFoundation
3 pCi/L Greeley, CO 0-20 Years Full Basement
6 pCi/L Greeley, CO 21-50 Years Full Basement
5 pCi/L Greeley, CO 21-50 Years Full Basement

Have a radon test result for Greeley? Submit your reading to help other homeowners.

Radon Readings Near Greeley, CO

Compare radon levels in Greeley with the closest nearby cities that have user-submitted test data.

CityDistanceAvg User LevelReadings
Evans 1.6 mi 6.33 pCi/L 3
Eaton 8.9 mi 7.00 pCi/L 1
Windsor 11.3 mi 7.00 pCi/L 5
Johnstown 11.7 mi 9.50 pCi/L 4
Loveland 19.7 mi 4.50 pCi/L 2
Fort Collins 21.2 mi 5.50 pCi/L 2
Berthoud 21.5 mi 12.00 pCi/L 2
Longmont 25.1 mi 8.00 pCi/L 4

Weld County Radon Profile

Weld County falls in EPA Radon Zone 1, meaning the local uranium-bearing geology is predicted to drive average indoor radon screening levels above the EPA's 4 pCi/L action threshold. Homeowner-submitted tests from 7 cities in Weld County average 8.05 pCi/L across 20 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Weld County to test, as levels can differ between neighboring homes.

Radon FAQ for Greeley, CO

What is the average radon level in Greeley, CO?
Based on 3 user-submitted tests, the average radon level in Greeley is 4.70 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.
What EPA Radon Zone is Greeley in?
Greeley and the 80631 zip code are in Weld County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.
How much does radon mitigation cost in Greeley?
Radon mitigation in Greeley typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.
Should I test for radon if I'm buying a home in Greeley?
Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.