Where, when and how bad the Fourth of July heat wave will be, in seven diagrams, charts and mapsMore than 160 million people — nearly half the U.S. population — are under heat alerts as of Thursday.People cool off along the Lake Michigan lakefront as temperatures topped 90 degrees in Chicago on Monday. The city could reach a heat index of 101 degrees Thursday.Scott Olson / Getty ImagesJuly 2, 2026, 2:18 PM EDTThe U.S. is looking at an unwelcome birthday gift: a dangerous heat wave arriving ahead of the holiday weekend.Just a moment.We are getting your experience ready.
The Fourth of July U.S. heat wave, in seven diagrams, charts and maps
More than 160 million people — nearly half the U.S. population — are under heat alerts as of Thursday.
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