Real Time

Areas

Santa Clarita Valley; Western San Fernando Valley; Eastern San Fernando Valley; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley

Note

Non-Weather Emergency Message. Not sent to IPAWS.

Description

* WHAT...The South Coast AQMD has issued an air quality alert due to harmful levels of ozone pollution. * WHERE...in the . Levels of ozone pollution can vary by time and location depending on emissions and air pollution transport. * WHEN...until 8 PM Saturday. 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.

Instruction

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 In South Coast Basin, to view current and forecasted air quality levels, visit the South Coast Air Quality Management District website at aqmd.gov or download the mobile app at www.aqmd.gov/mobileapp. Additional details for this air quality alert may be available at www.aqmd.gov/advisory. In Mojave Desert, to view current and forecasted air quality levels, visit the Mojave Desert Air Quality Management District website at mdaqmd.ca.gov. Additional details for this air quality alert may be available at www.mdaqmd.ca.gov/advisories. In antelope Valley, to view current and forecasted air quality levels, visit the antelope Valley Air Quality Management District website at www.avaqmd.ca.gov.

Areas

Interstate 5 Corridor; Santa Clarita Valley

Note

Non-Weather Emergency Message. Not sent to IPAWS.

Description

* WHAT...The South Coast AQMD has issued an air quality alert due to increased fine particle pollution from wildfire smoke. * WHERE...in the I-5 corridor near Castaic Lake. Levels of particle pollution can vary by time and location depending on fire activity and local weather conditions. * WHEN...Friday afternoon through Sunday morning. * 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.

Instruction

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 * ADDITIONAL DETAILS... To view current and forecasted air quality levels South Coast Air Basin, visit the South Coast Air Quality Management District website at aqmd.gov or download the mobile app at www.aqmd.gov/mobileapp. Additional details for this air quality alert may be available at www.aqmd.gov/advisory. To view current and forecasted air quality levels in the High Desert of LA County, visit the antelope Valley Air Quality Management District website at www.avaqmd.ca.gov.

Areas

Santa Clarita Valley; Western San Fernando Valley; Eastern San Fernando Valley; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley

Note

Non-Weather Emergency Message. Not sent to IPAWS.

Description

* WHAT...The South Coast AQMD has issued an air quality alert due to harmful levels of ozone pollution. * WHERE...in the . Levels of ozone pollution can vary by time and location depending on emissions and air pollution transport. * WHEN...until 8 PM Saturday. 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.

Instruction

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 In South Coast Basin, to view current and forecasted air quality levels, visit the South Coast Air Quality Management District website at aqmd.gov or download the mobile app at www.aqmd.gov/mobileapp. Additional details for this air quality alert may be available at www.aqmd.gov/advisory. In Mojave Desert, to view current and forecasted air quality levels, visit the Mojave Desert Air Quality Management District website at mdaqmd.ca.gov. Additional details for this air quality alert may be available at www.mdaqmd.ca.gov/advisories. In antelope Valley, to view current and forecasted air quality levels, visit the antelope Valley Air Quality Management District website at www.avaqmd.ca.gov.

Areas

Interstate 5 Corridor; Santa Clarita Valley

Note

Non-Weather Emergency Message. Not sent to IPAWS.

Description

* WHAT...The South Coast AQMD has issued an air quality alert due to increased fine particle pollution from wildfire smoke. * WHERE...in the I-5 corridor near Castaic Lake. Levels of particle pollution can vary by time and location depending on fire activity and local weather conditions. * WHEN...Friday afternoon through Sunday morning. * 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.

Instruction

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 * ADDITIONAL DETAILS... To view current and forecasted air quality levels South Coast Air Basin, visit the South Coast Air Quality Management District website at aqmd.gov or download the mobile app at www.aqmd.gov/mobileapp. Additional details for this air quality alert may be available at www.aqmd.gov/advisory. To view current and forecasted air quality levels in the High Desert of LA County, visit the antelope Valley Air Quality Management District website at www.avaqmd.ca.gov.

Areas

Central Ventura County Valleys

Note

Non-Weather Emergency Message. Not sent to IPAWS.

Description

AIR QUALITY ALERT FOR VENTURA COUNTY UNTIL 12:00 pm Saturday August 9, 2025 The Ventura County Air Pollution Control District has issued an air quality alert due to increased particulate matter from wildfire smoke in Fillmore/Piru. The air quality alert is in effect until 12:00 pm Saturday August 9, 2025. Localized air quality could fluctuate depending on wind conditions. Particulate matter can vary hour by hour and change frequently; at times producing unhealthy air quality in Ventura County. Air quality conditions anticipated to improve through the afternoon with the onset of onshore wind flow. Forecast AQI colors are meant to be as representative as possible for the 24-hour day. Air quality may fluctuate and is likely to be better or worse than is indicated for the full day. Exposure to particle pollution can cause serious health problems, aggravate lung disease, cause asthma attacks and acute bronchitis, and increase risk of respiratory infections. Residents are advised to use caution as conditions warrant. People with heart or lung diseases should follow their doctors advice for dealing with episodes of unhealthy air quality. Additionally, people with respiratory or heart disease, older adults, and children should avoid prolonged exposure, strenuous activities or heavy exertion as conditions dictate. For additional information, call the Ventura County Air Pollution Control District at 805.303.3889 (Monday-Friday), visit vcapcd.org, or follow VCAPCD on Twitter (@vcapcd).

Instruction