The National Weather Service has issued a three-day heat advisory affecting nearly every county in the state through Wednesday evening.

On Monday at 3:02 a.m. EDT a heat advisory was released by the National Weather Service valid between 10 a.m. EDT and 10 p.m. EDT for Midland, Bay, Huron, Saginaw, Tuscola, Sanilac, Shiawassee, Genesee,

A heat advisory was issued by the National Weather Service on Monday at 5 a.m. valid from 11 a.m. until Wednesday 8 p.m. for Northern Worcester and Southern Worcester as well as Franklin, Middlesex, Essex,

Nashville's NWS issues a Heat Advisory warning of extreme temperatures and high humidity until Wednesday evening.

Sweltering heat and high humidity gripped the Washington, D.C., area Monday, with temperatures climbing into the mid-90s and heat index values reaching up to 102 degrees.

Heat advisories are in effect from Monday to Wednesday across the Northeast, the National Weather Service said.

Air temperature, dew point, heat index… all words that are thrown around by the K-X Storm Team during the heat of summer. Meteorologist Michael Gonzalez walks us through why you should care about

Sunday: Sunny, with a high near 94. Calm wind becoming east around 5 mph in the afternoon. Sunday Night: Clear, with a low around 77. East-southeast wind around 5 mph, becoming calm.

A sunny, hot, and humid weekend is ahead for Jacksonville, with heat index values soaring in triple digits. When will temperatures reach their peak?