The heat index, or how it feels with humidity factored in, will rise into the triple digits for millions as the hot dome of ...

Around 170 million Americans from Nebraska to the Northeast are experiencing extremely warm temperatures due to an ongoing ...

Smoke and grit from hundreds of forest fires have spread across large parts of Canada and the northern US, sending air quality across the Midwest and northeast US and Toronto to unhealthy levels.

The National Weather Service has sent out millions of extreme heat warnings, heat watches and heat advisory alerts this week, ...

Extreme heat is expected to impact much of the middle, southern and eastern portions of the United States this week, though ...

A cold front is bringing storms and lower temperatures to parts of the country, while the Midwest sees poor air quality from ...

As parts of the Midwest continued to experience catastrophic flooding overnight and into Monday, dangerous heat and humidity ...

Almost 85 million Americans from South Dakota to Texas and North Carolina to Florida are already under extreme heat warnings, ...

Fall could be cool and dry, according to Old Farmers Almanac and Farmers' Almanac. The National Weather Service disagrees.

New York City broke a record Tuesday afternoon, hitting 100 degrees Fahrenheit at La Guardia Airport. Tampa, Florida, which ...

More than 170 million are under heat alerts across the Central U.S., Midwest, Southeast, and East Coast, with some areas ...