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

Nearly 170 million people from Texas to Maine are under heat alert due to dangerous triple-digit temperatures. Sweltering heat is pushing energy companies to their limits and forcing major cities to change plans heading into the July 4th holiday weekend. This comes as crews continue to battle dozens of wildfires across the West. NBC’s Shaquille Brewster reports from Chicago and TODAY’s Al Roker follows the predictions.