Watches, Warnings & Advisories



One product issued by NWS for: Big Bear Lake CA

Air Quality Alert

CAZ048-055>057-061-065-552-554-110600-
San Bernardino and Riverside County Valleys-The Inland Empire-
San Bernardino County Mountains-Riverside County Mountains-
Santa Ana Mountains and Foothills-Coachella Valley-
San Gorgonio Pass Near Banning-Orange County Coastal Areas-
Orange County Inland Areas-
Including the cities of Riverside, San Bernardino, Ontario,
Moreno Valley, Fontana, Rancho Cucamonga, Corona, Crestline,
Lake Arrowhead, Big Bear City, Big Bear Lake, Running Springs,
Wrightwood, Idyllwild-Pine Cove, Indio, Palm Springs,
Cathedral City, Palm Desert, Palm Desert Country, La Quinta,
Coachella, Huntington Beach, Costa Mesa, Newport Beach,
Laguna Beach, San Clemente, Santa Ana, Anaheim, Garden Grove,
Irvine, Orange, Fullerton, and Mission Viejo
1014 PM PDT Sun Sep 8 2024

...AIR QUALITY ALERT FOR ELEVATED FINE PARTICLE POLLUTION LEVELS DUE
TO WILDFIRE SMOKE AND ELEVATED OZONE AIR POLLUTION...

The South Coast AQMD has extended an air quality alert due to
increased fine particle pollution from wildfire smoke in the region
and due to high levels of ozone (smog). The air quality alert is in
effect until 11 PM on Monday for wildfire smoke and until 8 PM on
Monday for ozone.

If you smell smoke or see ash due to a wildfire, remain indoors with
windows and doors closed or seek alternative shelter, if feasible.
Avoid vigorous physical activity and run your air conditioner and/or
an air purifier. If possible, do not use whole house fans or swamp
coolers that bring in outside air. Avoid burning wood in your
fireplace or firepit and minimize sources of indoor air pollution
such as candles, incense, pan-frying, and grilling. If you must be
outdoors, keep the time brief and wear a tightly-fitted N-95 or P-
100 respirator to help reduce exposure. Limit the use of gasoline
powered lawn and garden equipment.

Exposure to particle pollution can cause serious health problems,
aggravate lung disease, cause asthma attacks and acute bronchitis,
and increase risk of respiratory infections. People with heart or
lung diseases should follow their doctor`s advice for dealing with
episodes of unhealthy air quality. Additionally, people with
respiratory or heart disease, older adults, and children are
particularly susceptible and should avoid prolonged exposure,
strenuous activities or heavy exertion as conditions dictate.

Levels of particle pollution can vary hour by hour and by location
depending on fire behavior and local weather conditions.

Elevated levels of ozone  the predominant summertime pollutant
are likely to result in poor air quality in the afternoon and early-
evening hours. Ozone air pollution can cause respiratory health
problems, including trouble breathing, asthma attacks, and lung
damage. Children, older adults, and people with asthma or COPD may
be more sensitive to the health effects of ozone.

To view current and forecasted air quality levels in the 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 Mojave
Desert, 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.

$$