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AEUS75 KBOU 171510
AQABOU
AIR QUALITY ALERT MESSAGE
COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT
RELAYED BY NATIONAL WEATHER SERVICE BOULDER CO
910 AM MDT THU JUL 17 2025
COC069-035-031-123-005-013-059-014-001-172200-
LARIMER-DOUGLAS-DENVER-WELD-ARAPAHOE-BOULDER-JEFFERSON-
BROOMFIELD-ADAMS-
910 AM MDT THU JUL 17 2025
...OZONE ACTION DAY ALERT FROM 400 PM WEDNESDAY UNTIL 400 PM
THURSDAY...
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 WEDNESDAY JULY 16 TO 400 PM THURSDAY JULY 17
IMPACTS...OZONE ACTION DAY ALERT IS NOW IN EFFECT FOR THE FRONT
RANGE URBAN CORRIDOR. OZONE WILL REMAIN IN THE GOOD TO MODERATE
RANGE ON WEDNESDAY. WARMING TEMPERATURES AND LIGHT WINDS MAY ALLOW
OZONE TO REACH LEVELS THAT ARE UNHEALTHY FOR SENSITIVE GROUPS ON
THURSDAY. THE HIGHEST CONCENTRATIONS ARE EXPECTED ALONG THE
WESTERN PORTIONS OF THE NORTHERN FRONT RANGE, FROM WESTERN DENVER
NORTHWARD TO FORT COLLINS. 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.
THURSDAY, JULY 17, 2025. 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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