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Los Angeles, CA Weather Alert: Air Quality, Rain Nov 11-14
California — Harmful fine particle pollution is prompting a health alert across parts of Los Angeles County as temperatures climb into the mid 80s before a wetter weekend arrives.
By Miles Carter · 2026-11-11T11:29:33.172Z
California — Harmful fine particle pollution is prompting a health alert across parts of Los Angeles County as temperatures climb into the mid 80s before a wetter weekend arrives.
Residents face two developing concerns: unhealthy air conditions through Wednesday night and increasing rain chances beginning Thursday night.
According to the South Coast Air Quality Management District, an Air Quality Alert remains in effect until 11:59 p.m. Wednesday, Nov. 11.
The alert covers portions of Los Angeles County, including Maywood, Bell Gardens, Westmont, Hawthorne and Manhattan Beach.
Air pollution raises health concerns across Los Angeles Fine particle pollution can penetrate deep into the lungs, potentially triggering asthma attacks, breathing difficulties and other respiratory problems.
Children, older adults, pregnant individuals and people with existing heart or lung conditions face greater risks.
The agency advises residents to monitor the Air Quality Index and limit strenuous outdoor activity when pollution reaches unhealthy levels.
When air quality becomes unhealthy, sensitive groups should avoid prolonged outdoor exposure.
Residents can help protect indoor air by keeping windows closed and using air purifiers or recirculating air conditioning.
Air quality conditions can vary considerably between neighborhoods.
Temperatures reach 86 degrees before rain develops Los Angeles is expected to reach approximately 86 degrees Wednesday under sunny skies.
Thursday remains warm and sunny, with highs near 81 degrees.
However, conditions begin changing Thursday night as a Pacific weather system approaches Southern California.
According to the National Weather Service in Los Angeles/Oxnard, rain becomes likely after 4 a.m. Friday.
Precipitation chances reach 60% Thursday night, with temperatures falling toward 60 degrees.
Friday brings additional rain opportunities and cooler conditions, with highs near 74 degrees and a 70% precipitation probability.
Friday night rain chances climb to 90% The strongest rain probability arrives Friday night.
The National Weather Service expects a 90% precipitation chance, with showers likely before 10 p.m. and rain expected afterward, mainly through 4 a.m. Saturday.
Temperatures fall toward 56 degrees.
Drivers traveling Interstate 5, Interstate 10 and Highway 101 should prepare for wet pavement and potentially reduced visibility.
Saturday brings a chance of rain before 10 a.m., followed by mostly sunny skies and highs near 70 degrees.
That represents a 16 degree decline from Wednesday's projected high.
Sunday remains mostly sunny, with highs near 70 degrees, before additional rain chances develop Sunday night and Monday.