East Coast Faces Record-Breaking Heat Wave

Extreme temperatures and high humidity put millions under heat alerts from Florida to Maine.

Washington D.C. and New York City forecast triple-digit temperatures through midweek.
Heat indexes are expected to reach 105 to 110 degrees in several major cities.
Authorities urge residents to use cooling centers and minimize electricity use to prevent blackouts.
Nighttime temperatures will offer little relief, staying around 80 degrees in some areas.
A cold front later in the week is expected to bring some respite from the heat.