There’s one night of the year where celebrations across the United States light up the map like no other. It’s the Fourth of ...

Extreme heat is impacting states across the country. See maps of high temperature forecasts and heat index levels.

A heat wave is currently affecting about 160 million people, according to the National Weather Service. Here's which states ...

Multiple regions of the country faced the possibility of severe weather on Thursday, according to forecasters.

Forecasters say a heat dome is scheduled to settle over parts of the Midwest and eastern U.S. late this week, marking an ...

Heat advisories and extreme heat watches are in place across much of the U.S., lasting until Tuesday with the potential to be ...

The Midwest National Parks spans 3 time zones and 13 states including Arkansas, Illinois, Indiana, Iowa, Kansas, Michiga ...

Maps show where new plumes of smoke will cause hazy skies through the end of the week. Low-level smoke is forecast to spread eastward Wednesday across the Appalachians and into the Mid-Atlantic and ...

An air quality map shows conditions improving in the U.S. on Friday as smoke from the Canadian wildfires subsides.

A heat wave is moving in, with over 100 million people from the Midwest to the Northeast on alert for life-threatening heat this weekend and into next week.

A system of low pressure could develop near Florida or off the southeastern coast of the U.S. over the Fourth of July weekend ...

Columbia researchers found arsenic in drinking water is associated with poor birth outcomes, and released data on nationwide ...