What is this map of Ontario showing me? You’re viewing recent indoor radon levels measured by homeowners using Airthings radon monitors. While geology plays an important role, factors like building type, weather, and foundation gaps also impact radon risk levels. This map does not predict radon risk for your home. In fact, it demonstrates that homes in the same region are reporting varying levels of indoor radon.
Q: Does this map show if my home has radon? A: No. The map indicates general readings of indoor radon levels, but radon levels can vary widely between homes—even those right next door. Q: Why are radon levels different in the same area? A: Variations in soil composition, construction methods, and ventilation can lead to significant differences in radon risk among homes. Q: Should I test my home even if my area shows low radon? A: Yes. It's essential to test every home for radon using Airthings radon monitors, as radon cannot be accurately predicted by location alone.
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Darren Johnson
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