A scorching heat wave has gripped most of the U.S. East Coast, South, and Midwest.
Temperatures in 15 states have soared above 100 degrees, with heat advisories and warnings in effect for at least 23 states, including Alabama, Kansas, and Arkansas.
In some places, the extreme hot weather has turned deadly.
A 61-year-old pastor died from heat exhaustion in Jackson, Miss., after working in his yard.
"Usually in heat stroke you stop sweating in most cases, not all cases, and then get extremely hot because your body has lost the ability to fight off the heat at that point," AMR Sprint Paramedic Tony Acys explained.
In Denning, Ark., survivors of a tornado that struck a few months ago are having to endure the extreme heat in tents.
"You feel weak. You feel like you're going to black out and you go to your knees, and you just hope that somebody pays attention and gets you to the emergency room," tornado survivor Debora Wilson said.
The hot weather is adding to already serious drought conditions in several parts of the country.
In addition to the stifling heat in the Midwest, storm winds gusted up to 85 miles an hour, killing at least one person and injuring six.
On the East Coast the strain in the electrical grid knocked out power in parts of Manhattan. To prevent further blackouts, the power company is urging customers to save energy.
Many cities have opened cooling stations to help residents cool off.
"Keeping hydrated and using sunblock," one person said.
Meanwhile, those who make their living by working outside are trying to stay cool as well.
"This hat helps a lot, keeps the sun off the top of your head," construction worker Joshua Hamby said.
Forecasters say the extreme heat could continue throughout the week and could stick around even longer.