Moreover , snow and ice around the house can worsen this process , making it easier for radon gas to get in . This effect is the strongest during the colder months when the temperature difference between indoors and outdoors is at its peak , leading to higher radon levels ( see the graph below ).
Ignoring seasonal radon changes raises the risk of prolonged exposure to high levels significantly increasing the risk of lung cancer .
Radon Seasonal Variations : EcoQube Data Analysis , January - December 2023 , Colorado .
Radon Levels Fluctuate Every Day
Besides seasonal variations , radon levels often rise naturally during nighttime . It ' s common to observe radon levels increasing , particularly in the hours before sunrise . This phenomenon happens , again , due to the peak temperature difference between indoor and outdoor environments , often resulting in elevated indoor radon levels during the night .
Additionally , occupancy patterns can affect radon levels daily . Reduced airflow during periods of absence , such as office hours or sleep , may lead to the buildup of radon gas . When normal activity resumess , increased airflow facilitates the accumulation of radon , thereby lowering its concentration levels .