Rising temperatures prompt excessive-heat warnings this week for much of Southern California

Temperatures are expected to rise by as much as 16 degrees above normal early this week, elevating the risk of wildfires and heat-related illnesses as another blistering August heat wave hits Southern California.

Temperatures will range from 90 to 109 degrees in valley, inland and mountain areas on Monday and Tuesday, prompting excessive heat warnings and advisories for a large swath of the region, including Los Angeles, Ventura, Riverside, San Bernardino and San Diego counties

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