Cheyenne, Wyoming

Regional Weather Alerts


     
Alert: Air Quality Alert
Area(s): 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; Upper Wind River Basin; Wind River Basin; Lander Foothills; Green Mountains and Rattlesnake Range; Natrona County Lower Elevations; Casper Mountain
Effective: 2026-08-04 @ 12:06 pm -> 2026-08-05 @ 12:00 pm
Onset: 2026-08-04 @ 12:06 pm
Severity: Unknown
Certainty: Unknown
Urgency: Unknown
Issued By: NWS Riverton WY on 2026-08-04 @ 12:06 pm
Headline: Air Quality Alert issued August 4 at 11:06AM MDT by NWS Riverton WY
Description: 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...Yellowstone National Park, the Bighorn Basin, the Wind
 River Basin, the Absaroka Mountains, the Owl Creek and Bridger
 Mountains, the Bighorn Mountains, the Rattlesnake Hills and Green
 Mountains, Johnson County, and Natrona County.
* WHEN...11 AM MDT Tuesday to 11 AM MDT Wednesday.
* 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/.
Alert: Air Quality Alert
Area(s): Northeast Bighorn Mountains; Sheridan Foothills
Effective: 2026-08-04 @ 11:36 am -> 2026-08-05 @ 12:00 pm
Onset: 2026-08-04 @ 11:36 am
Severity: Unknown
Certainty: Unknown
Urgency: Unknown
Issued By: NWS Billings MT on 2026-08-04 @ 11:36 am
Headline: Air Quality Alert issued August 4 at 10:36AM MDT by NWS Billings MT
Description: 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...Sheridan County, Wyoming.
WHEN...Through 11 AM MDT Wednesday.
IMPACTS...Heavy smoke from wildfires will continue to reduce air
 quality.
HEALTH INFORMATION...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 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/
Alert: Air Quality Alert
Area(s): Northern Campbell; Southern Campbell; Western Crook; Wyoming Black Hills; Weston County Plains; Newcastle; Northeastern Crook
Effective: 2026-08-04 @ 11:33 am -> 2026-08-05 @ 12:00 pm
Onset: 2026-08-04 @ 11:33 am
Severity: Unknown
Certainty: Unknown
Urgency: Unknown
Issued By: NWS Rapid City SD on 2026-08-04 @ 11:33 am
Headline: Air Quality Alert issued August 4 at 10:33AM MDT by NWS Rapid City SD
Description: 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 11 AM MDT Wednesday.
* IMPACTS...Poor air quality due to wildfire smoke.