Air Quality Alert
COC005-059-035-001-031-013-069-014-123-102200-
Arapahoe-Jefferson-Douglas-Adams-Denver-Boulder-Larimer-
Broomfield-Weld-
1010 PM MDT Sun Aug 9 2026
...OZONE ACTION DAY ALERT FROM 400 PM SUNDAY UNTIL 400 PM
MONDAY...
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 Sunday August 09 to 400 PM Monday August 10
IMPACTS...Ozone Action Day Alert is now in effect for the Front
Range Urban Corridor. Ozone concentrations in the Unhealthy for
Sensitive Groups category are possible both Sunday and Monday,
mainly in and near the Denver metro area. 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.
Monday, August 10, 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.
$$
WYZ001>020-022>030-101800-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Bighorn Basin-Southwest Bighorn Basin-Southeast Bighorn Basin-
Owl Creek and Bridger Mountains-Bighorn Mountains West-
Bighorn Mountains Southeast-Northeast Johnson County-
Southeast Johnson County-Teton and Gros Ventre Mountains-
Jackson Hole-Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
Including the cities of Lake, Mammoth, Old Faithful, Clark, Cody,
Meeteetse, Basin, Greybull, Lovell, Powell, Shell, Thermopolis,
Ten Sleep, Worland, Buffalo, Kaycee, Jackson, Dubois, Riverton,
Shoshoni, Lander, Jeffrey City, Casper, Afton, Alpine,
Star Valley Ranch, Thayne, Pinedale, La Barge, Big Piney, Farson,
Kemmerer, Cokeville, Rock Springs, Green River, and Wamsutter
1139 AM MDT Sat Aug 8 2026
...AIR QUALITY ALERT IN EFFECT UNTIL NOON MDT MONDAY...
The following message is transmitted on behalf of the Wyoming
Department of Environmental Quality, Air Quality Division, and the
Wyoming Department of Health.
* WHAT...Air Quality Alert for Wildfire Smoke.
* WHERE...All of Western and Central Wyoming
* WHEN...Now through Noon Monday.
* IMPACTS...Smoke from western United States wildfires continues to
be observed across much of western and central Wyoming. The smoke
is limiting visibilities at times.
HEALTH INFORMATION...The Wyoming Department of Health recommends
that the elderly, young children, and individuals with respiratory
problems avoid excessive physical exertion and minimize outdoor
activities during this time. Wildfire smoke is made up of a variety
of pollutants, including particulate matter and ozone, which can
cause respiratory health effects. Although these people are most
susceptible to health impacts, the Department of Health also advises
that everyone should avoid prolonged exposure to poor air quality
conditions.
CURRENT CONDITIONS...The Wyoming Department of Environmental
Quality, Air Quality Division offers near real-time air quality data
for Wyoming`s monitoring stations and health effects information to
help the public interpret current conditions. Current air quality
conditions across the state of Wyoming can be found at
http://www.wyvisnet.com/.
$$
WYZ054>060-101800-
Northern Campbell-Southern Campbell-Western Crook-
Wyoming Black Hills-Weston County Plains-Newcastle-
Northeastern Crook-
Including the cities of Gillette, Recluse, Weston, Rozet, Wright,
Moorcroft, Hulett, Pine Haven, Keyhole Reservoir, Devils Tower,
Sundance, Four Corners, Rochelle, Clareton, Upton, Osage, Newcastle,
Colony, Beulah, and Aladdin
1046 AM MDT Fri Aug 7 2026
...THE WYOMING AIR QUALITY DIVISION HAS ISSUED AN AIR QUALITY ALERT
FOR WILDFIRE SMOKE IN EFFECT UNTIL NOON MDT MONDAY...
The following message is transmitted in collaboration with the
Wyoming Department of Environmental Quality, Air Quality Division,
and the Wyoming Department of Health.
* WHAT...Air Quality Alert for Wildfire Smoke.
* WHERE...Northeast Wyoming.
* WHEN...Through Noon MDT Monday.
* IMPACTS...Poor air quality due to wildfire smoke.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
The Wyoming Department of Health recommends the elderly, young
children, and individuals with respiratory problems avoid excessive
physical exertion and minimize outdoor activities during this time.
Wildfire smoke is made up of a variety of pollutants, including
particulate matter and ozone, which can cause respiratory health
effect. Although these people are most susceptible to health
impacts, the Department of Health also advises that everyone should
avoid prolonged exposure to poor air quality conditions.
&&
The Wyoming Department of Environmental Quality, Air Quality
Division offers near real-time air quality data for Wyoming`s
monitoring stations and health effects information to help the
public interpret current conditions. Current air quality conditions
across the state of Wyoming can be found at http://www.wyvisnet.com/
$$
