The National Weather Service quietly retired "Excessive Heat Warning" in 2025. Here's what the new terms mean, and the exact thresholds regional offices use to issue them.

More than 165 million Americans face major or extreme heat risk this week as a record-threatening heat dome settles over the East Coast and Midwest through the July Fourth weekend — and complicates World Cup matches.

A solstice-week heat dome pushed France toward a national record and shut hundreds of schools, with Britain's peak still days away.

A heat dome has settled over Western Europe for the summer solstice, with France warning Monday could be its hottest day on record and 53 departments already under an orange alert.