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

Severe weather events, such as heavy rainfall, are on the rise worldwide. Reliable assessments of these events can save lives ...

Humidity will soon surge to extreme levels across 40 states. Find out where there will be excessive heat and humidity — and how humidity patterns are changing.

Image from NWS HeatRisk interactive map as of Sunday 22 June 2025. NWS "An extreme heat warning means that a period of very hot temperatures, even by local standards, will occur," the NWS says.

A map from the National Weather Service shows where extreme cold warnings and freeze warnings have been issued. The extreme cold warnings are depicted in the bright, vibrant blue color, whereas ...