Radon Levels in Illinois

All Illinois County Radon Measurements 

Cook County Radon Measurements

(Averages)

DuPage County Radon

Measurements (Averages)

Kane County Radon Measurements (Averages)

Kendall County Radon Measurements (Averages)

Will County Radon Measurements (Averages)

Cook County Radon Measurements

 (Percent of Measurements >=4 pCi/L)

DuPage County Radon Measurements

 (Percent of Measurements >=4 pCi/L)

Kane County Radon Measurements

 (Percent of Measurements >=4 pCi/L)

Kendall County Radon Measurements 

(Percent of Measurements >=4 pCi/L)

Will County Radon Measurements 

(Percent of Measurements >=4 pCi/L)

The 2014 Illinois Emergency Management Agency state that the above maps are NOT intended to be used to determine if a home in a given county or zip code should be tested for radon. Homes with elevated levels of radon have been found throughout the state of Illinois. ALL Homes Should Be Tested regardless of geographic location. (Illinois Emergency Management Agency. (2014). Radon Illinois. Radon in Illinois. Retrieved from http://www.illinois.gov/iema/NRS/Radon/Pages/RadonIllinois.aspx)