A heat dome is trapping over 90 million Americans in extreme temperatures this week with the National Weather Service issuing heat alerts from Nebraska to Florida.

Multiple states are under extreme heat warnings, advisories or watches on July 23, according to the National Weather Service.

Republicans are encountering early headaches in Senate races viewed as pivotal to maintaining the party’s majority in next year's midterm elections, with recruitment failures, open primaries ...

At least 135 people, including 37 children, died in the torrential downpour over the July 4 holiday weekend. The number of missing people dropped sharply on Saturday.

A series of maps showed data for multiple types of pollutant.

Federal regulators repeatedly granted appeals to remove Camp Mystic’s buildings from their 100-year flood map, loosening oversight as the camp operated and expanded in a dangerous flood plain in ...

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A map shows the new, expanded layout for the upcoming 10th anniversary of the Picklesburgh festival, held annually in Downtown Pittsburgh. Pittsburgh Downtown Partnership ...

The White Sage Fire was burning in Arizona bout 15 miles southeast of Fredonia in Coconino County and north of the Grand Canyon State Park.

Air quality is unhealthier-than-average for some people Thursday as winds are blowing wildfire smoke across the Northern California region.

Multiple states were at risk of seeing severe storms on Thursday, according to the Storm Prediction Center.