Brutal heat wave breaks records across Southern California. When will it ease up?

Southern California continues to be battered by extreme heat that will continue for one more day after sending temperature records tumbling all weekend.

Forecast

The heat wave blanketing the Southland was not expected to break until Tuesday, with an excessive heat warning in effect until Monday night. Los Angeles County and surrounding areas were under a red flag warning as temperatures reached more than 100 degrees in some areas.

Daily highs are forecast to drop as much as 30 degrees between Monday and Thursday.

Monday: Los Angeles. 93-103 degrees; valleys: 103-111 degrees

Tuesday: Los Angeles 80s-90s; valleys: 94-102

Wednesday: Los Angeles 70s-80s; valleys mid-80s

Thursday: Los Angeles 70s-80s; valleys: mid-80s

Records

Several heat records were tied or broken across the region Monday, according to the National Weather Service.

The temperature in downtown Los Angeles reached 104 degrees Monday, breaking the previous record for Sept. 9 set in 1956, when it was 102. Santa Ana tied its record set in 1956 of 103 degrees.

The high was 104 degrees in Anaheim, 98 degrees in Vista and 104 degrees in Escondido, each breaking previous records.

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Impacts

The incessant heat has knocked out power to thousands of Californians, fueled wildfires in rugged mountain terrain and forced school administrators to suspend classes or implement minimum days, releasing students earlier than usual, in the hottest parts of the region.

The L.A. Unified School District cited concerns over its air conditioning and announced that three elementary schools — Noble, Woodlake and Canoga Park — would be on minimum day schedules Monday.

Torrance Unified took the same action district-wide, citing the excessive heat advisory and a lack of air-conditioned classrooms.

Redlands Unified School District in San Bernardino County also closed its schools Monday, citing poor air quality from the Line fire.

Last week, the heat caused batteries to overheat on Metrolink’s Arrow train between San Bernardino and Redlands, temporarily interrupting service.

On Monday morning, North Hollywood High School announced it was ending classes early after school air conditioners stopped working.