Date: July 17, 2019

Showers or thunderstorms ending near noon then mainly cloudy with 40 percent chance of showers. Risk of a thunderstorm late this afternoon. Local amount 15 to 25 mm. High 28. Humidex 37. UV index 7 or high.


Feels like 34C

Environment Canada
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This page was reviewed or revised on Tuesday, April 21, 2015 2:19 PM

What is radon?

Radon is a radioactive gas found naturally in the environment. It is created from decaying uranium found in soil, rocks or water. Radon is tasteless, odourless, and invisible, and enters the home through cracks and crevices in the foundation floors and walls, open floor drains, and other areas of exposed soil. The highest level of radon is usually found in lower levels of the home, such as the basement.

Health effects of radon

When you breathe radon gas, radioactive particles are trapped in the lungs and damage the tissue. Long-term exposure may lead to lung cancer. According to Health Canada, radon is the second-leading cause of lung cancer in Canada.

What can I do?

Testing for radon is inexpensive and easy. Test kits are available at local retailers and online. Health Canada suggests long-term testing for a minimum of 3 months during winter for the most accurate results. If your home test results are above Health Canada’s guideline of 200 Bq/M3 it will need to be fixed. The higher the level, the sooner it needs to be fixed.

For more information on radon visit Health Canada.

Take The Lung Association's Radon Quiz