Peak heat indexes could reach 46°C in parts of the country, with several cities setting record temperature highs.

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

With temperatures forecast to reach up to 42 degrees, the US president told an audience he planned to make a long speech, “just to show that I can do anything”.

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.

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

As the United States heads into a milestone July 4 holiday this weekend, parts of the Northeast are preparing for hazardous levels of heat.

High humidity is expected to make conditions feel even hotter

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…

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…

A 'prolonged, dangerous heatwave' is sweeping across the central and eastern United States, just hours ahead of the Fourth of July holiday. The temperature is expected to go up to…

Fourth of July weather update: Millions across the eastern United States face dangerous heat this Fourth of July weekend, with temperatures potentially reaching 115 degrees…

More than 250 million Americans are experiencing a dangerous heat wave that has already spoiled some Fourth of July plans.

More than 250 million Americans are experiencing a dangerous heat wave that has already spoiled some Fourth of July plans.

Dangerous heat dome disrupts American celebrations in Midwest and East Coast with travel delays and health problems

Cities and towns across the U.S. are facing the tough decision of canceling or postponing festivities as a triple-digit heatwave continues.

A punishing heat wave threatened America's July 4th celebrations, World Cup matches and power grids as near-record temperatures scorched the eastern United States on Friday.

Early Friday afternoon, Freedom 250 announced that the Great American State Fair on the National Mall would temporarily close until 5 pm due to the heat.

A dangerous heatwave disrupts Fourth of July celebrations across the eastern U.S., leading to numerous event cancellations and delays.

The United States marks the 250th anniversary of its independence on Saturday amid a historic heat wave that has forced the suspension or rescheduling of events in several cities…