NEW YORK: Pools were packed and power grids strained as millions of Americans sweltered in stifling heat and humidity Thursday, with dangerous temperatures expected to hit major cities through the Fourth of July holiday weekend.
The heat wave that has been broiling the Midwest began intensifying in the Northeast, with temperatures hitting or surpassing 100F (38C) in cities including New York and Washington.
The heat index — which measures how hot it feels based on temperature and humidity combined — was even more merciless. The National Weather Service (NWS) warned the index could peak as high as 115F (46C) in the mid-Atlantic region.
The intense heat was of particular concern given the many planned outdoor events to celebrate America’s 250th anniversary, as well as a string of weekend World Cup matches.
Authorities urged people to stay indoors especially in the hottest parts of the afternoon, to check on their neighbors, drink more water than usual, and to find air conditioning if they don’t have access at home.
