If you continually have high levels over a period of time, or if you get an outcome above 4.0 pCi/L in summertime, you more than likely demand radon reduction. The EPA approximates the life time risk of radon-induced lung cancer for never-smokers at 7 per 1,000 individuals, compared to 62 per 1,000 for cigarette smokers subjected to a degree of 4 pCi/L. Your threat increases with your exposure to radon as well as cigarette smoke gradually. Temporary detectors measure radon degrees for 2 days to 90 days, depending on the gadget.