Extreme levels of heat and humidity are forecast to spread across the country over the next two weeks, blanketing the Southwest, Midwest, and East Coast with high temperatures beginning this June 19 ...

Naser Daher, of Durham’s Old Farm neighborhood, carries his belongings through floodwaters near the Eno River in Durham on ...

Heat waves are becoming commonplace, and so too is high humidity, which can strain the electrical grid, hurt the economy, and ...

Across much of the world, hotter days are no longer arriving alone. The air itself is changing, sometimes turning from dry ...

During the hot, humid summer months, meteorologists often discuss the heat index instead of the actual air temperature. But how is the heat index calculated, and why is it more important than the air ...