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

With a heat dome bringing broiling conditions to Southern California, decades-old temperatures are expected to be broken in ...

Meteorologists are reaching for superlatives to describe an oncoming heat wave so intense and rare for this time of year that it could leave some locations shattering their all-time temperature ...

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 began last week is expected to continue to push temperatures past the 100-degree mark this week in ...

The heat index, or apparent temperature, combines air temperature and relative humidity to indicate how hot it feels. High humidity slows sweating, the body's natural cooling system, making ...

See how daily temperature records this week could be broken or tied, with added potential for monthly temperature records to be broken: NWS.

Underground spaces tend to trap heat. Soil and rock act as insulation, making it harder for warmth to escape. Trains, brakes, ...

A major heat wave kicked off in the Southland, where temperatures are predicted to soar 25 degrees above normal, smash ...