Dangerous heat is affecting more than 165 million people across the U.S. East Coast and Midwest, with record temperatures creating significant health risks. The U.S. National Weather Service has issued warnings indicating that parts of these regions are facing "major" or "extreme" heat-related health dangers.
The intense heatwave is occurring during a busy weekend that includes a large celebration for America's 250th birthday, hosted by U.S. President Donald Trump, and multiple World Cup matches.