This July 4th could be hottest ever in parts of U.S. Maps show the forecast expected to break records.
This July Fourth could be the hottest on record for millions of Americans as a massive heat wave traps more than half of the United States under a heat dome through the holiday weekend. Dangerously high temperatures continued to ramp up Thursday from the Midwest to the East Coast, forecasters said. Between daily high temperatures and warm overnight lows — which won’t be low enough to offer much relief — more than 300 records are expected to be set by Saturday. Heat wave forecast maps Zoom in on any location on the map below, or search for your city or










