ST. CLOUD -- An update to a story we told you about yesterday. Stearns County says they are out of the free radon test kits.

However, test kits are available for purchase at local hardware stores.

The health department says Stearns County homes have a higher than average potential for increased radon levels due to the area's underlying geology.

Radon is an odorless, colorless gas that has been linked to lung cancer.