Western Canada wildfires raise air quality health concerns across major cities in coming days

Fire crews in western Canada are preparing for what could be an explosive few days. A heat wave is stretching into an unprecedented fourth week across much of B.C. and Alberta, with temperatures reaching above 30 degrees Celsius and thick smoke creating serious health concerns. And as Heather Yourex-West explains, forecasters warn the worst could be yet to come.

• From traditional knowledge to FireSmart, Okanagan leaders focus on wildfire risks
• Smoke sinks into the Okanagan Valley, hazard rating rises
• Williams Lake wildfire prompts local state of emergency