About Radon Levels in Saint Clair County

The average national indoor radon level is 1.3 pCi/L. (FAQ: What is a picocurie?)

The average indoor radon levels of Saint Clair County, as determined by radon test results from Air Chek, is 1.2 pCi/L

Radon Risk Chart for Saint Clair County

    Results under 2 pCi/L

    Results between 2 and 3.9 pCi/L

    Results 4 pCi/L and above

Check Your Own Radon Levels!

Additional information about radon levels in Saint Clair County may be available through this website.

State Radon Officer

Sharon Odom
(866) 628-9891
(573) 522-8596
Missouri Department of Health and Senior Services
PO Box 570
Jefferson City MO, 65102

Radon Resources