199
AEUS75 KBOU 112210
AQABOU
AIR QUALITY ALERT MESSAGE
COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT
RELAYED BY NATIONAL WEATHER SERVICE BOULDER CO
410 PM MDT THU JUN 11 2026
COC123-014-069-001-059-035-005-031-013-122200-
WELD-BROOMFIELD-LARIMER-ADAMS-JEFFERSON-DOUGLAS-ARAPAHOE-
DENVER-BOULDER-
410 PM MDT THU JUN 11 2026
...OZONE ACTION DAY ALERT FROM 400 PM THURSDAY UNTIL 400 PM
FRIDAY...
THE COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT HAS
ISSUED THE FOLLOWING...
WHAT...OZONE ACTION DAY ALERT.
WHERE...DOUGLAS, JEFFERSON, DENVER, WESTERN ARAPAHOE, WESTERN
ADAMS, BROOMFIELD, BOULDER, LARIMER, AND WELD COUNTIES
WHEN...400 PM THURSDAY JUNE 11 TO 400 PM FRIDAY JUNE 12
IMPACTS...OZONE ACTION DAY ALERT IS NOW IN EFFECT FOR THE FRONT
RANGE URBAN CORRIDOR. HOT AND SUNNY WEATHER WILL LEAD TO
INCREASED OZONE THROUGH FRIDAY AFTERNOON. FOR COLORADO AIR
QUALITY CONDITIONS, FORECASTS, AND ADVISORIES, VISIT:
HTTPS://WWW.COLORADO.GOV/AIRQUALITY/COLORADO_SUMMARY.ASPX IF
POSSIBLE, PLEASE HELP US REDUCE OZONE POLLUTION BY LIMITING
DRIVING GAS AND DIESEL-POWERED VEHICLES UNTIL AT LEAST 4 P.M.
FRIDAY, JUNE 12, 2026. COLORADO IS ALSO ADDRESSING OZONE POLLUTION
THROUGH STATE POLICIES. FOR MORE INFORMATION ABOUT HEALTH IMPACTS
AND HOW OZONE POLLUTION FORMS IN COLORADO, VISIT:
HTTPS://CDPHE.COLORADO.GOV/OZONE- POLLUTION-AND-YOUR-HEALTH
HEALTH INFORMATION...INCREASING LIKELIHOOD OF RESPIRATORY SYMPTOMS
AND BREATHING DISCOMFORT IN ACTIVE CHILDREN AND ADULTS AND PEOPLE
WITH LUNG DISEASE, SUCH AS ASTHMA. ACTIVE CHILDREN AND ADULTS, AND
PEOPLE WITH LUNG DISEASE, SUCH AS ASTHMA, SHOULD REDUCE PROLONGED
OR HEAVY OUTDOOR EXERTION.
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