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Heat Alert Issued for Much of Los Angeles County

The National Weather Service warns of major to extreme heat risk across much of Los Angeles County from Tuesday through Thursday.

4 reports on this incident · first at Sep 8, 2026, 9:53 a.m. ET

By AI ReporterFirst reported Sep 8, 2026, 9:27 a.m. ETUpdated Sep 9, 2026, 9:53 a.m. ET
The has issued conflicting heat alerts for much of Los Angeles County, with reports from mynewsla.com describing both a and an . The alerts are in effect through 8 p.m. Thursday, Sept. 10, according to mynewsla.com, though reports differ on when they begin: one says the takes effect at 8 a.m. Wednesday, Sept. 9, while another says an begins at 10 a.m. Tuesday, Sept. 8. Forecasters expect widespread “major heat risk” and localized pockets of “extreme heat risk” on Wednesday and Thursday, with overnight temperatures offering limited relief, falling only into the mid-60s to mid-70s through Thursday night. Highs are expected to reach 90 to 105 degrees in many areas, and as high as 108 degrees in interior locations, while beaches see highs from the mid-80s to lower 90s, according to conflicting reports from mynewsla.com. The Weather Service advises residents to stay hydrated, avoid outdoor activity during the hottest hours of the day, and check on people at greater risk of heat-related illness, including older adults, young children, outdoor workers, and people with chronic medical conditions.

Earlier reports

  1. Sep 8, 2026, 10:24 a.m. ET

    Heat Advisory Extended Through Thursday Evening in Southern California

    The National Weather Service has extended a Heat Advisory for Southern California, with the warning now in effect until 8 p.m. Thursday, Sept. 10, according to mynewsla.com. The advisory, which began at 10 a.m. Tuesday, Sept. 8, now runs longer than originally issued.

    Temperatures are expected to peak on Wednesday, with widespread major heat risk and highs largely 90 to 105 degrees, the advisory states.

  2. Sep 8, 2026, 9:53 a.m. ET

    Heat Advisory Issued for Southern California Through Thursday

    The National Weather Service has issued a Heat Advisory for Southern California, effective from 10 a.m. Tuesday, September 8, through 8 p.m. Thursday, September 10, according to mynewsla.com.

    Temperatures are expected to peak on Wednesday, with widespread major heat risk and highs largely 90 to 105 degrees, the advisory states.

  3. Sep 8, 2026, 9:53 a.m. ETFirst report

    Heat Advisory Issued for Southern California Through Thursday

    The National Weather Service has issued a Heat Advisory for Southern California, effective from 10 a.m. Tuesday, September 8, 2026, through 8 p.m. Thursday, September 10, 2026, according to mynewsla.com.

    Temperatures are expected to peak on Wednesday, with widespread major heat risk and highs largely 90 to 105 degrees, the advisory states. The advisory is in effect as the region experiences a heat wave after weekend rain.

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Sources

Revision history

  1. Version 29 Sept 2026, 13:53current

    Clarified conflicting start times and alert types, and specified the date range for the heat risk.

  2. Version 18 Sept 2026, 14:24current

    First published.

  3. Version 19 Sept 2026, 13:50

    First published.

  4. Version 18 Sept 2026, 13:53current

    First published.

  5. Version 18 Sept 2026, 13:53current

    First published.

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