Extreme heat streaks are becoming more common in major U.S. cities as climate change fuels more dangerous heat.

A heat advisory and extreme heat warning will be in effect as hot and humid conditions hit Delaware on July 25. See the weather forecast.

From Texas to New England, millions of Americans are facing dangerously hot temperatures that have led the National Weather Service to issue heat advisories and extreme heat warnings this week.

A heat advisory and extreme heat warning will be in effect as hot and humid conditions hit Delaware on July 25. See the weather forecast.

The National Weather Service has issued extreme heat warnings and heat advisories for regions of Louisiana. What to know about the heat index.

An extreme heat warning was issued by the National Weather Service in Mount Holly at 2:37 a.m. on Thursday, July 24.

Before you grab that beer or margarita, rethink that drink. Experts urge people to avoid excessive drinking during this heat wave.

An extreme heat warning was issued by the National Weather Service for Camden, Burlington and Gloucester counties.

Extreme heat warnings, advisories and watches are in effect across several states Wednesday, July 23, as a powerful heat dome tightens its grip over the Mississippi Valley.

The extreme heat poses health risks to everyone, but it becomes a unique challenge for kids.