ABC News and CBS News report a heat wave that began in the Midwest, spread eastward, and is projected to produce heat indices of 102–112°F in cities including Chicago, New York, Philadelphia, Washington D.C., and Boston through the July 4 weekend, with minimal overnight relief. At least 13,000 heat-related deaths have been recorded in the United States since 2018. New York City has activated its heat emergency plan and opened hundreds of cooling centers while some municipalities have adjusted public events.