The first major heat wave of the summer will bring another day of dangerously high temperatures to the East Coast on Wednesday before relief moves in. The oppressive heat shattered records across the Northeast on Tuesday.

Temps are soaring in cities across the Atlantic coast, where some cities are reaching 100 degrees with heat indexes approaching 110 degrees.

Tens of millions of people in major cities across the U.S. Northeast are facing record high temperatures on Tuesday on what was expected to be the worst day of an oppressive heat wave that has spread over much of the country since late last week.