Temperatures across interior Southern California will climb dramatically over the next few days, as a prolonged, dangerous heat wave begins Wednesday and could persist into next week.

The report, released this week, found that 58% of fast-food workers surveyed in July said they had worked in excessive heat conditions in the last year. And nearly half, or 48%, reported experiencing heat illness symptoms including headaches, fatigue, dizziness, confusion, muscle pain or nausea.

Southern California faces a heatwave with temperatures forecast to exceed average levels by up to 10 degrees inland.

State firefighting resources have been deployed in Los Angeles County ahead of a heat wave expected to increase fire damage across Southern California through the weekend.

After several days with below normal temps, Southern California will see another round of heat wave with elevated fire weather conditions next week.