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

An air quality map shows conditions improving in the U.S. on Friday as smoke from the Canadian wildfires subsides.

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

Northern Vermont, New Hampshire and Maine are in the forecasted view line to potentially see the northern lights for both ...

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

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.

June was split even with 15 days when temperatures were below average and 15 days when temperatures were above average.

Hail, flash floods, damaging winds, and even tornadoes are among the severe weather threats facing parts of the U.S.

Northern Vermont, New Hampshire and Maine are in the forecasted view line to potentially see the northern lights for both tonight and tomorrow as of 9 a.m. on June 24. The northern lights are ...