Seventeen states could break daily temperature records on Wednesday, as the heat wave that has been scorching the West ...

In Arizona and California, multiple locations hit 112 degrees Fahrenheit last week.

An early-season heat wave that has been baking the West this week obliterated numerous all-time records in California and ...

According to NOAA's Climate Prediction Center, the spring temperature outlook favors above-normal temperatures for much of ...

An extreme heat warning was in effect for metro Phoenix as temperatures were forecast to reach a record-breaking temps.

The heat index is a measure of how hot it really feels on your body when relative humidity is factored in with the actual air temperature. Since heat index values were devised for shady, light wind ...

The heat wave that is engulfing much of the western U.S. right now is unprecedented. This area, also known as a ridge because ...

Southern California faces a third day of record-breaking temperatures as an unusually strong March heat wave pushes the ...

Meteorologists are reaching for superlatives to describe an oncoming heat wave so intense and rare for this time of year that ...

The new heat record is an alarming signal of how hot the planet is getting and how fast it’s happening.

Friday's spring equinox may seem like a quaint notion to those already enduring furnace-like 90-110°F summer heat.