Large swaths of California are under heat advisories Friday and Saturday with officials cautioning against outdoor activities in triple-digit areas.

Los Angeles County is included in a heat advisory issued by the National Weather Service on Wednesday at 12:38 p.m. The advisory is in effect until 5 p.m.

Los Angeles County is under a heat advisory which was released by the National Weather Service on Saturday at 2:43 a.m. The advisory is in effect until 9 p.m.

Los Angeles County is the focus of a heat advisory released at 7:37 p.m. on Tuesday by the National Weather Service. The advisory is valid from Wednesday 11 a.m. until Thursday, May. 22 at 9 p.m.

Heat advice for Los Angeles County residents Make sure you stay hydrated avoid strenuous activity during peak hours (10 a.m.-6 p.m.) and use plenty of sunscreen while wearing light-colored clothing.

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Los Angeles County is included in a heat advisory issued by the National Weather Service on Wednesday at 12:38 p.m. The advisory is in effect until 5 p.m.