Air Quality Alert Message
Status
Issued Active alertStart Time
Wed 07/22/2026 08:20 PM EDTEnd Time
Mon 07/27/2026 11:00 PM EDTImpacts
Informational
Full Alert Message
Air Quality Alert Message Relayed by National Weather Service Los Angeles/Oxnard CA 520 PM PDT Wed Jul 22 2026 520 PM PDT Wed Jul 22 2026 ...AIR QUALITY ALERT FOR HARMFUL LEVELS OF OZONE (SMOG) AIR POLLUTION... * WHAT...The South Coast AQMD has issued an air quality alert due to harmful levels of ozone pollution. Visit https://www.aqmd.gov/alertinfo to check current and forecasted air quality levels. * WHERE...in the South Coast Air Basin and Coachella Valley. Levels of ozone pollution can vary by time and location depending on emissions and air pollution transport. * WHEN...until 8 PM Monday. The highest ozone levels typically occur in the afternoon and early-evening hours. * IMPACTS... Ozone air pollution can cause serious health problems, including trouble breathing, asthma attacks, and lung damage. Everyone can be affected, but sensitive groups such as people with lung 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, check air quality levels and act as needed: * When Air Quality Index (AQI) levels are "Unhealthy for Sensitive Groups" (orange), sensitive groups as specified above should limit extended or intense outdoor activity. * When AQI is "Unhealthy" (red), everyone may experience health impacts. Sensitive groups should avoid extended time outdoors. * When AQI is "Very Unhealthy" (purple), sensitive groups should avoid all outdoor physical activity. Everyone else should avoid extended or intense outdoor activity. * When AQI is "Hazardous" (maroon), everyone should avoid all outdoor physical activity. * ADDITIONAL DETAILS... To help keep indoor air clean when air quality is poor: * Keep windows and doors closed * Run your air conditioner and/or an air purifier * 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, and grilling To help minimize outdoor ozone air pollution levels: * Limit the use of gasoline powered lawn and garden equipment until evening hours * Try to delay trips to the gas station and the use of household chemicals until the evening
Technical Header
CAZ373-380-378-548-088-375-372-379-280300- Eastern San Fernando Valley- Including the cities of Burbank, Glendale, and Universal City Eastern San Gabriel Mountains- Interstate 5 Corridor- Los Angeles County San Gabriel Valley- Including the cities of Pasadena, San Gabriel, and Pomona 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-