The city will feel as hot as 110 degrees Friday as "dangerously" warm weather rolls in. View Full Caption Getty Images/Scott Olson

CHICAGO — The city will feel as hot as 110 degrees Friday as "dangerously" warm weather rolls in.

A heat wave will start on Thursday, when Chicago is expected to hit 93 degrees, but it'll feel like 99 degrees, said AccuWeather meteorologist Paul Walker. There could be some showers on Thursday, Walker said, but the day will be "hotter" and humid.

Things are expected to be at their hottest on Friday, when warm weather and high humidity will make it will feel as hot at 110 degrees outside though it'll only be in the upper 90s, Walker said. Most of the city will be rain-free.

Chicago will be close to its record-high temperature for that day: 101 degrees set in 1991, Walker said.

"That appears to be the worst day," Walker said.

Saturday will still be hot, though it will only feel like 93 degrees, Walker said. It will be a "pretty oppressive day," but there is a chance of rain showers during the night and heading into the next morning. Sunday will only hit about 90 degrees.

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The warm weather isn't unusual for this time of year, Walker said, and he's not expecting any records to be broken.

"We occasionally get these heat waves," Walker said. "Pretty typical we get some spells like this."

The National Weather Service has issued an excessive heat watch for Thursday and Friday, warning of "dangerously hot and humid" weather.

Walker said people who will be outside during the heat wave should take breaks and "drink plenty of water."

"Try to stay out of the heat if you can," Walker said. "Check on the elderly, especially if they don't have air conditioners."

The city has been monitoring the weather and has six cooling centers that are available, said Rich Guidice, managing deputy of operations:

• 1140 W. 79th St.

• 10 S. Kedzie Ave.

• 4314 S. Cottage Grove Ave.

• 845 W. Wilson Ave.

• 8650 S. Commercial Ave.

• 4312 W. North Ave.

The city will also be "closely monitoring" special events that will be held outside during the heat wave and will be on the lookout for heat-related calls to 311 and 911, Guidice said.

“If we start getting calls of heat-related issues that becomes a concern …,” Guidice said. “There’s a lot of activities that the city will be taking place to address this heat situation.”

Chicagoans should drink a lot of water and Gatorade to stay hydrated and should check on loved ones to make sure they're OK, Guidice said.

“Stay as cool as you can. Make sure you stay hydrated. And check on your loved ones. Check on your friends and check on your neighbors,” Guidice said. “Don’t take for granted that everybody’s doing OK.”

Metra will be slowing trains by about 10 mph because of the heat, said spokeswoman Meg Reile, and that could mean trains are delayed by 10 or 15 minutes. Metra will also be making more inspections during the heat wave.

That typically happens whenever it's 95 degrees or warmer outside, Reile said.

Dangerously hot & humid wx could be on the way Thu & Fri. Excessive Heat Watch for all of nrn & central IL. #ilwx pic.twitter.com/3OXs2xfYi0 — NWS Chicago (@NWSChicago) July 18, 2016

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