979
AEUS76 KSGX 072331
AQASGX

Air Quality Alert Message
Relayed by National Weather Service San Diego, CA
431 PM PDT Sat Sep 7 2024

CAZ048-055>057-065-554-090345-
San Bernardino and Riverside County Valleys-The Inland Empire-
San Bernardino County Mountains-Riverside County Mountains-
Santa Ana Mountains and Foothills-San Gorgonio Pass Near Banning-
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, Santa Ana, Anaheim, Garden Grove,
Irvine, Orange, Fullerton, and Mission Viejo
431 PM PDT Sat Sep 7 2024

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

The South Coast AQMD has extended the air quality alert in the South
Coast Air Basin due to high levels of ozone (smog) and increased
fine particle pollution from wildfire smoke in the region. The air
quality alert is in effect until Monday evening for smog and Sunday
evening for wildfire smoke.

High ozone levels are expected to impact most of the South Coast Air
Basin. Smoke is expected to impact the Inland Empire and the San
Bernardino Mountains.

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.

Air quality can change depending on time of day and weather
conditions. Increased emissions of chemicals and faster ozone
formation rates due to heat, along with low winds and stagnant
weather can cause unusually high and persistent levels of ozone
pollution.

For the latest air quality forecasts and information, visit the
website at aqmd.gov.

$$