Heat wave forecast: DC National Mall events disrupted, NYC power grid strained

July 5, 2026 by Yassine

in Washington, D.C.

Alex Wong/Getty Images

The heat wave began on Monday in the Midwest and later spread east.

On Thursday, the heat index reached 110 degrees in Philadelphia and 111 in Washington, D.C.

A fountain offers relief from the heat on July 2, 2026, in Philadelphia.

Spencer Platt/Getty Images

New York City’s heat index reached 106 degrees on Thursday.continue reading …