NWS Los Angeles/Oxnard CAOctober 3, 2026
Air Quality Alert: Interstate 5 Corridor, Santa Clarita Valley, Santa Susana Mountains and 1 more, CA
The National Weather Service office in Los Angeles/Oxnard issued an air quality alert for Interstate 5 Corridor, Santa Clarita Valley, Santa Susana Mountains and 1 more in California, which was in force until 8:45 p.m. local time on October 4.
ExpiredAir Quality Alert
In force for 24.2 hours; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Los Angeles/Oxnard CA
- Area
- Interstate 5 Corridor, Santa Clarita Valley, Santa Susana Mountains and 1 more
- State
- California
- Issued
- 8:35 p.m. PDT, October 3, 2026
- Expires
- 8:45 p.m. PDT, October 4, 2026
- CAP severity, certainty, urgency
- Unknown, Unknown, Unknown
- Official source
- National Weather Service: the notice at its source
NWS notices, October 2026The latest from the National Weather Service
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
* 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 the Santa Clarita Valley, the I-5 corridor, and the Angeles National Forest. Levels of particle pollution can vary by time and location depending on fire activity and local weather conditions. * WHEN...8 PM Saturday until 8 PM Sunday. * 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.
What the agency told people to do
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
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.