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

A brutal heat wave across the eastern United States trapped millions of people in sweltering air this week with record-high ...

Another surge of above-average temperatures is expected for much of next week throughout the Midwest and Northeast—although ...

Indications are that drier, sunnier and more settled weather will return to Ireland after a fairly gloomy weekend ...

Temperatures in Florida, Georgia, Arkansas, Tennessee, Kentucky, Indiana, Illinois, North Carolina, and Virginia could feel ...

Sunday reached 31C in parts of southeast England, but Tuesday will be even hotter, with highs of 35C in London and the south ...

Temperatures will surge well into the 90s across the Northeast and Mid-Atlantic early next week as another wave of hot and ...

A heat dome has begun to blanket the US and is expected to bake more than 30 states with high temperatures that could shatter ...

High temperatures across the Plains, Midwest, mid-Atlantic and Northeast are expected to hit at least 15 degrees above normal ...

Maps show where extreme humidity and 90- or 100-degree temperatures will affect about 255 million people across the United ...