Temperatures Set to Sizzle for 170M Nationwide: What to Expect

Nearly 170 million people from Texas to Maine are under heat alerts for dangerous triple-digit temperatures. The oppressive heat is pushing power companies to the limit and forcing major cities to change plans heading into the July 4 holiday weekend. It comes as crews continue to battle dozens of wildfires in the West. NBC’s Shaquille Brewster reports from Chicago and TODAY’s Al Roker tracks the forecast.