It's going to be another scorcher today in much of the country.
Temperatures are expected to soar into the upper 90's and even higher in places for at least the next few days.
The governor of Illinois is making more than 130 state office buildings available as cooling centers beginning today.
You may remember the heat wave of 1995, which killed 700 people in Chicago.
The city has opened 24-hour cooling centers, and people are urged to check on their elderly neighbors.
The National Weather Service has issued warnings for excessive heat for Las Vegas, Chicago, St. Louis, Philadelphia, Tulsa, Oklahoma and parts of New Jersey.
Heat combined with high humidity will make it feel like 110 degrees in parts of New Jersey today.
In Middletown City, Ohio, they've canceled the last week of summer school because the buildings lack air conditioning.