Weather Alerts For La Crescenta-Montrose, CA

# HEADLINE -------------------- AIR QUALITY ALERT FOR HARMFUL FINE PARTICLE POLLUTION LEVELS DUE TO WILDFIRE SMOKE # DETAILS -------------------- 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 in portions of Los Angeles County. Levels of particle pollution can vary by time and location depending on fire activity and local weather conditions. WHEN until Wednesday at 4:30 PM. 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. ISSUED AT Tuesday, May 19, 2026 at 9:43 PM PDT ISSUED BY Relayed by National Weather Service Los Angeles/Oxnard CA HEADER Air Quality Alert Message # 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 # AREAS AFFECTED -------------------- Santa Susana Mountains, Eastern San Fernando Valley, Los Angeles County San Gabriel Valley, Western San Fernando Valley Including the cities of Northridge, Woodland Hills, Van Nuys, Chatsworth, Burbank, Universal City, Glendale, Sunland, La Canada Flintridge, Oat Mountain, East Los Angeles, El Monte, Pasadena, Pomona, and San Gabriel