The Peoria area is in for some hot and humid conditions this week.
National Weather Service meteorologist John Bumgardner said a high pressure ridge is moving in from the west.
"We'll have heat indices upwards of 100 to 105 as the humidity values increase, and we get dew point temperatures into the 70s, which is tropical," he said.
Bumgardner said there are slight chances for thunderstorms throughout the week that could cool things down, but as of now, the uncomfortable weather is expected to continue through Friday.
Brian Williamsen of the American Red Cross of Illinois said it's important to take extra precautions this week.
"Make sure that you're staying hydrated, taking care of yourself, and if you see something, make sure you ask and make sure everyone's doing alright," Williamsen said.
Bumgardner said water is best for hydration, but it's important to drink other liquids, too.
"You also lose salt and minerals through sweat, so having some other type of drinks that has electrolytes in it would be great," he said, adding drinks with caffeine or alcohol should be avoided.
Williamsen said excessive heat can lead to dangerous health conditions like heat exhaustion or heat stroke.
He said people should take frequent breaks when working outdoors, and wear loose-fitting, light-colored clothing. They also should avoid leaving children or pets in vehicles.
"Cars can heat up so quickly. The number is about 120 degrees that it can get up to in just a matter of minutes with the heat as it is," said Williamsen.
About 600 people per year die from heat-related illnesses, according to the Centers for Disease Control.
Cooling centers are open in Peoria, East Peoria, and other communities for people who need to take shelter from the heat during the hottest parts of the day.
The Peoria Police Department lobby also is open from 9 a.m. to 5 p.m., and the city fire stations are open from 7 a.m. to 10 p.m.
In East Peoria, the Civic Plaza is open Monday-Thursday from 8 a.m. to 8 p.m., Friday 8 a.m. to 6 p.m., and Saturday 9 a.m. to 5 p.m. The EastSide Centre is open Monday-Friday 6 a.m. to 8 p.m. and Saturday and Sunday from 7 a.m. to 1 p.m.