More than 185 million people across most of the United States are on alert for widespread, dangerous heat on Monday.

ORLANDO, Fla. – A dangerous and potentially record-breaking heat wave is building across Florida this weekend. A strong dome of high pressure is locking into place, cutting off rain chances and sending temperatures soaring.

Orlando heat wave triggers Heat Advisory with temperatures reaching mid to upper 90's and heat index up to 110°F.

The National Hurricane Center is tracking four tropical waves. Sweltering temps continue for Florida, heat advisories are in effect..

A dome of high pressure has parked itself over Florida, pressing a lid on the atmosphere. That means clear skies, blazing sunshine, and very little rain to cool us off. Add dew points in the mid to upper 70s, and your body’s cooling system is working overtime.

Central Florida can expect dangerously hot temperatures on Monday with heat indices up to 112° and a Heat Advisory in effect.

How low should you set your thermostat for as record-breaking heat sweeps over the country? Here's what experts and other Floridians say.

Meteorologists warned that the oppressive heat wave is part of a larger system impacting much of the Southeast and Midwest.