What is my health risk if radon gas is in my home? RADON RISK IF YOU SMOKE Radon Level If 1,000 people who smoked were exposed to this level over a lifetime... The risk of cancer from radon exposure compares to... WHAT TO DO: Stop smoking and... 20 pCi/L About 135 people could get lung cancer 100 times the risk of drowning Fix your home 10 pCi/L About 71 people could get lung cancer 100 times the risk of dying in a home fire Fix your home 8 pCi/L About 57 people could get lung cancer Fix your home 4 pCi/L About 29 people could get lung cancer 100 times the risk of dying in an airplane crash Fix your home 2 pCi/L About 15 people could get lung cancer 2 times the risk of dying in a car crash Consider fixing between 2 and 4 pCi/L 1.3 pCi/L About 9 people could get lung cancer (Average indoor radon level) (Reducing radon levels below 2 pCi/L is difficult.) 0.4 pCi/L About 3 people could get lung cancer (Average outdoor radon level) (Reducing radon levels below 2 pCi/L is difficult.) Note: If you are a former smoker, your risk may be lower.   RADON RISK IF YOU HAVE NEVER SMOKED Radon Level If 1,000 people who never smoked were exposed to this level over a lifetime... The risk of cancer from radon exposure compares to... WHAT TO DO: 20 pCi/L About 8 people could get lung cancer The risk of being killed in a violent crime Fix your home 10 pCi/L About 4 people could get lung cancer Fix your home 8 pCi/L About 3 people could get lung cancer 10 times the risk of dying in an airplane crash Fix your home 4 pCi/L About 2 people could get lung cancer The risk of drowning Fix your home 2 pCi/L About 1 person could get lung cancer The risk of dying in a home fire Consider fixing between 2 and 4 pCi/L 1.3 pCi/L Less than 1 person could get lung cancer (Average indoor radon level) (Reducing radon levels below 2 pCi/L is difficult.) 0.4 pCi/L Less than 1 person could get lung cancer (Average outdoor radon level) (Reducing radon levels below 2 pCi/L is difficult.) Note: If you are a former smoker, your risk may be higher.