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About Radon Levels in Warren County

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

The average indoor radon levels of Warren County, as determined by radon test results from Air Chek, is 10.1 pCi/L

Local News

Radon Risk Chart for Warren 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 Warren County may be available through this website.


State Radon Officer

Patrick Daniels
(800) 325-1245
(217) 782-1325
Illinois Emergency Management Agency
1035 Outer Park Drive
Springfield IL, 62704