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Air Quality Alert Message

Status

Issued Active alert

Start Time

Mon 05/18/2026 10:18 PM EDT

End Time

Tue 05/19/2026 10:00 PM EDT

Impacts

Informational

Full Alert Message

Air Quality Alert Message Relayed by National Weather Service Los Angeles/Oxnard CA 718 PM PDT Mon May 18 2026 718 PM PDT Mon May 18 2026 ...AIR QUALITY ALERT FOR HARMFUL FINE PARTICLE POLLUTION LEVELS DUE TO WILDFIRE SMOKE... * WHAT...The South Coast AQMD has issued an air quality alert due to increased fine particle pollution from wildfire smoke. Visit https://www.aqmd.gov/alertinfo to check current and forecasted air quality levels. * WHERE...most of LA County and all of Orange County. Levels of particle pollution can vary by time and location depending on fire activity and local weather conditions. * WHEN...until Tuesday evening. * IMPACTS...Particles in wildfire smoke can get deep into the lungs and cause serious health problems such as heart attacks, strokes, asthma attacks, and difficulty breathing. Everyone can be affected, but people with lung or heart disease, older adults, people who are pregnant, children, and those who spend a lot of time outdoors are at greater risk. PRECAUTIONARY/PREPAREDNESS ACTIONS... To protect your health, if you smell or see smoke: * Remain indoors with windows and doors closed * Avoid intense outdoor physical activity * Run your air conditioner and/or an air purifier * If you must be outdoors, keep the time brief and wear a well- fitting N-95 mask * Do not use whole house fans or swamp coolers that bring in outside air if you have other methods to stay cool * Avoid other sources of pollution such as fireplaces, candles, incense, grilling, and gasoline-powered lawn and garden equipment

Technical Header

CAZ373-380-370-378-366-368-548-367-088-375-372-379-369-200200- Eastern San Fernando Valley- Including the cities of Burbank, Glendale, and Universal City Eastern San Gabriel Mountains- Eastern Santa Monica Mountains Recreational Area- Interstate 5 Corridor- Los Angeles County Beaches- Including the cities of Santa Monica, Torrance, and Long Beach Los Angeles County Inland Coast including Downtown Los Angeles- Including the cities of Inglewood, Downey, Norwalk, Beverly Hills, and West Hollywood Los Angeles County San Gabriel Valley- Including the cities of Pasadena, San Gabriel, and Pomona Palos Verdes Hills- Santa Clarita Valley- Including the cities of Santa Clarita, Newhall, and Valencia Santa Susana Mountains- Western San Fernando Valley- Including the cities of Reseda, Woodland Hills, and Northridge Western San Gabriel Mountains and Highway 14 Corridor- Western Santa Monica Mountains Recreational Area-