135  
AEUS76 KSGX 072258  
AQASGX  
 
AIR QUALITY ALERT MESSAGE  
RELAYED BY NATIONAL WEATHER SERVICE SAN DIEGO, CA  
358 PM PDT MON JUL 7 2025  
 
CAZ048-055>057-061-065-554-110300-  
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 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, SANTA ANA, ANAHEIM, GARDEN GROVE, IRVINE, ORANGE,  
FULLERTON, AND MISSION VIEJO  
358 PM PDT MON JUL 7 2025  
 
...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.  
 
* WHERE...IN INLAND ORANGE COUNTY, THE SANTA ANA MOUNTAINS, THE  
INLAND EMPIRE, THE SAN BERNARDINO MOUNTAINS, THE RIVERSIDE COUNTY  
MOUNTAINS AND THE COACHELLA VALLEY. LEVELS OF OZONE POLLUTION CAN  
VARY BY TIME AND LOCATION DEPENDING ON EMISSIONS AND AIR POLLUTION  
TRANSPORT.  
 
* WHEN...MONDAY 2:30 PM UNTIL THURSDAY 8:00 PM. 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  
 
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.  
 
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.  
 
TO VIEW CURRENT AND FORECASTED AIR QUALITY LEVELS, VISIT THE  
ANTELOPE VALLEY AIR QUALITY MANAGEMENT DISTRICT WEBSITE AT  
WWW.AVAQMD.CA.GOV.  
 
TO VIEW CURRENT AND FORECASTED AIR QUALITY LEVELS, VISIT THE SAN  
DIEGO COUNTY AIR POLLUTION CONTROL DISTRICT WEBSITE AT  
WWW.SDAPCD.ORG/CONTENT/SDAPCD/AIR-QUALITY.HTML. ADDITIONAL DETAILS  
FOR THIS AIR QUALITY ALERT MAY BE AVAILABLE AT  
WWW.SDAPCD.ORG/CONTENT/SDAPCD/AIR-QUALITY/SMOKE-ADVISORY.HTML.  
 
FOR THE LATEST AIR QUALITY FORECASTS AND INFORMATION, VISIT THE  
WEBSITE AT AQMD.GOV.  
 
 
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