The nation's 250th birthday weekend coincides with a deadly heat wave. Here are some ways to keep cool and potentially save your life.

Heat domes trap overnight temperatures too — and millions without air conditioning are facing this week's Eastern U.S. heat wave.

Sweltering conditions are expected to last through the weekend

A prolonged, dangerous heat wave will continue to intensify across most of the central to eastern U.S. into the Fourth of July weekend.

Heat-trapping high pressure systems can sit over an area for a week or longer

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The nation is gripped in a dangerous heat dome. Threatening millions of people in the Midwest and Eastern United States.

Cities open cooling centres, extended pool hours and urged residents to conserve electricity

A dangerous heat wave is tightening its grip on the East Coast, with the worst conditions arriving as millions prepare to celebrate the Fourth of July outdoors.

Long hours outdoors, day drinking, and World Cup matches are among the factors raising the risks of heat-related illness, as hot weather spreads across the eastern US.

Gaining freedom from the heat will be a challenge this Independence Day in the eastern U.S., and it's already starting ahead of the holiday weekend.

A dangerous heat wave is bringing prolonged extreme heat to more than two dozen states across the Midwest, the South and the East Coast.

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.

A heat wave over the Fourth of July weekend could put millions at risk of heat-related illnesses. Here’s what to do to stay safe—and why you don’t just need to drink lots of water

Millions of Americans sweltered in stifling heat and humidity Thursday with dangerous temperatures expected to hit swaths of densely populated areas through the Fourth of July…

National Weather Service warns heat index could reach 115F as extreme heat grips midwest, Ohio Valley and east coast

High humidity is expected to make conditions feel even hotter

Safety experts say dangerous holiday heat will impact millions. Here's how to stay safe if you're celebrating outside – and when to stay inside.

More than 160 million people — nearly half the U.S. population — are under heat alerts as of Thursday.

Dangerous heat wave threatens U.S. Fourth of July celebrations-

July 4 heatwave: A severe heatwave is gripping millions across the US, threatening July 4th celebrations with record-breaking temperatures and dangerous humidity. Outdoor events…