The National Weather Service already has issued extreme heat warnings, watches and advisories across a swath of the Midwest and South.

The peak of this week’s summer heat is going to be Wednesday afternoon to the early evening. A ridge of high pressure has made for increasing warmth and humidity across a huge swath of the Upper Midwest,

StormTeam 5 has declared Friday an Impact Weather Day due to high heat, high humidity and a chance of thunderstorms in the forecast.

The Pensacola area is under a heat advisory for the second day in a row. A cluster of showers and thunderstorms will offer relief on Wednesday.

A heat advisory for Florida's Treasure Coast is in effect from noon through 6 p.m., with heat index values from 109 to 112 possible.

Heat and oppressive humidity will greatly impact your daily routine this week, and First Alert Weather Impact Days have been issued through Thursday due to the excessive heat.

High pressure remains firmly in place for the time being and that is allowing us to see plenty of sunshine, but also hot and steamy afternoons.

The National Weather Service office in Mobile, Alabama, issued a heat advisory in Escambia, Santa Rosa and Okaloosa counties between 10 a.m. and 7 p.m. Monday. Heat index values are forecast to reach as high as 109℉ in portions of south central and southwest Alabama, northwest Florida and southeast Mississippi.