FORT WAYNE, Ind. (WOWO): In case you couldn’t tell, this weekend’s going to be a hot one.

An excessive heat warning is in effect for all of northeast Indiana until Sunday night, with temperatures peaking in the mid-90s, with heat indices between 105 and 110 degrees.

That means at-risk people like the very young, the elderly, those without air conditioning, and those participating in strenuous outdoor activities will be in danger of heat-related illness, and car interiors can reach lethal temperatures in minutes.

The National Weather Service says you should drink plenty of water, seek out a cooling shelter if you need it, and put off outdoor activities between 1pm and 7pm.

Cooling centers in Fort Wayne include the Fort Wayne Rescue Mission from 7am to 6pm, and the Foellinger-Freimann Botanical Conservatory from 10am to 5pm Friday and Saturday, and noon to 4pm Sunday.