Cheyenne, Wyoming

Regional Weather Alerts


     
Alert: Red Flag Warning
Area(s): Northern Foot Hills; Butte County Area; Northern Campbell; Southern Campbell; Crook County Plains; Weston County Plains; Wyoming Black Hills
Effective: 2026-08-07 @ 6:46 pm -> 2026-08-08 @ 7:00 am
Onset: 2026-08-08 @ 1:00 pm -> 2026-08-08 @ 9:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Rapid City SD on 2026-08-07 @ 6:46 pm
Headline: Red Flag Warning issued August 7 at 5:46PM MDT until August 8 at 8:00PM MDT by NWS Rapid City SD
Description: ...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT SATURDAY DUE TO
 GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR NORTHERN FOOT HILLS, BUTTE
 COUNTY AREA, NORTHERN CAMPBELL, SOUTHERN CAMPBELL, CROOK COUNTY
 PLAINS, WESTON COUNTY PLAINS, AND WYOMING BLACK HILLS...
The National Weather Service in Rapid City SD has issued a Red Flag
 Warning.
* AFFECTED AREA...Fire Weather Zones 314, 315, 316, 317, 318, 323,
 and 327.
* TIMING...From noon to 8 PM MDT Saturday.
* WINDS...Northwest winds 10 to 20 mph with gusts up to 35 mph.
* RELATIVE HUMIDITY...Relative Humidity as low as 7 percent.
* IMPACTS...Any fires that develop will spread rapidly. Outdoor
 burning is not recommended.
Alert: Red Flag Warning
Area(s): North Laramie Valley/Shirley Basin; Ferris/Seminoe/Shirley Mountains; Central and West Carbon; Upper North Platte River Basin; Snowy Range/Medicine Bow NF; North Snowy Range Foothills
Effective: 2026-08-07 @ 3:37 pm -> 2026-08-08 @ 7:00 am
Onset: 2026-08-07 @ 3:37 pm -> 2026-08-07 @ 9:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Cheyenne WY on 2026-08-07 @ 3:37 pm
Headline: Red Flag Warning issued August 7 at 2:37PM MDT until August 7 at 8:00PM MDT by NWS Cheyenne WY
Description: ...RED FLAG WARNING IN EFFECT FROM 11 AM SATURDAY TO 9 PM MDT
 SUNDAY FOR GUSTY WINDS, LOW HUMIDITY, AND POOR RECOVERIES FOR
 FIRE WEATHER ZONES 420, 421, 422, 425, 426, AND 427...
The National Weather Service in Cheyenne has issued a Red Flag
 Warning, which is in effect from 11 AM Saturday to 9 PM MDT
 Sunday.
* AFFECTED AREA...Fire weather zones 420 through 422 and fire
 weather zones 425 through 427.
* WIND...During the daytime hours, west winds from 15 to 25 mph
 with gusts up to 40 mph. Overnight, lighter southwest winds of 5
 to 15 mph.
* HUMIDITY...Daytime minimum RH between 5 and 10 percent on Friday
 and on Saturday, and between 10 and 15 percent on Sunday.
 Overnight recoveries of 20 to 35 percent.
* ADDITIONAL DETAILS...Isolated dry lightning and gusty and
 erratic winds associated with high based thunderstorms will be
 possible Saturday and Sunday afternoon and evening.
* IMPACTS...Any fires that develop will likely spread rapidly.
 Outdoor burning is not recommended.
Alert: Red Flag Warning
Area(s): North Laramie Valley/Shirley Basin; Ferris/Seminoe/Shirley Mountains; Central and West Carbon; Upper North Platte River Basin; Snowy Range/Medicine Bow NF; North Snowy Range Foothills
Effective: 2026-08-07 @ 3:37 pm -> 2026-08-08 @ 7:00 am
Onset: 2026-08-08 @ 12:00 pm -> 2026-08-09 @ 10:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Cheyenne WY on 2026-08-07 @ 3:37 pm
Headline: Red Flag Warning issued August 7 at 2:37PM MDT until August 9 at 9:00PM MDT by NWS Cheyenne WY
Description: ...RED FLAG WARNING IN EFFECT FROM 11 AM SATURDAY TO 9 PM MDT
 SUNDAY FOR GUSTY WINDS, LOW HUMIDITY, AND POOR RECOVERIES FOR
 FIRE WEATHER ZONES 420, 421, 422, 425, 426, AND 427...
The National Weather Service in Cheyenne has issued a Red Flag
 Warning, which is in effect from 11 AM Saturday to 9 PM MDT
 Sunday.
* AFFECTED AREA...Fire weather zones 420 through 422 and fire
 weather zones 425 through 427.
* WIND...During the daytime hours, west winds from 15 to 25 mph
 with gusts up to 40 mph. Overnight, lighter southwest winds of 5
 to 15 mph.
* HUMIDITY...Daytime minimum RH between 5 and 10 percent on Friday
 and on Saturday, and between 10 and 15 percent on Sunday.
 Overnight recoveries of 20 to 35 percent.
* ADDITIONAL DETAILS...Isolated dry lightning and gusty and
 erratic winds associated with high based thunderstorms will be
 possible Saturday and Sunday afternoon and evening.
* IMPACTS...Any fires that develop will likely spread rapidly.
 Outdoor burning is not recommended.
Alert: Red Flag Warning
Area(s): Niobrara/Lower Elevations of Converse/Thunder Basin National Grassland; Middle North Platte River Basin/Niobrara and Converse High Plains; North Laramie Range and Adjacent High Plains; Southwest Carbon County; Sierra Madre Range/Medicine Bow NF; Southern Laramie Valley; Southern Laramie Range; Laramie Foothills and High Plains; Laramie East High Plains; Bordeaux/Chugwater/Wheatland; Goshen/Middle-Lower North Platte River Basin
Effective: 2026-08-07 @ 3:37 pm -> 2026-08-08 @ 7:00 am
Onset: 2026-08-08 @ 12:00 pm -> 2026-08-09 @ 10:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Cheyenne WY on 2026-08-07 @ 3:37 pm
Headline: Red Flag Warning issued August 7 at 2:37PM MDT until August 9 at 9:00PM MDT by NWS Cheyenne WY
Description: The National Weather Service in Cheyenne has issued a Red Flag
 Warning, which is in effect from 11 AM Saturday to 9 PM MDT
 Sunday.
* AFFECTED AREA...Fire weather zone 417.Fire weather zone
 418.Fire weather zone 419.Fire weather zone 423.Fire weather
 zone 424.Fire weather zone 428.Fire weather zone 429.Fire
 weather zone 430.Fire weather zone 431.Fire weather zone
 432.Fire weather zone 433.
* WIND...During the daytime hours, west to northwest winds from 15
 to 25 mph with gusts up to 40 mph. Overnight, lighter variable
 winds of 5 to 10 mph.

* HUMIDITY...Daytime minimum RH between 5 and 10 percent on Friday
 and on Saturday, and between 8 and 12 percent on Sunday.
 Overnight recoveries of 20 to 40 percent along and west of
 Interstate 25 and 40 to 60 percent in Niobrara, Goshen, and
 Eastern Laramie Counties.
* ADDITIONAL DETAILS...Isolated dry lightning and gusty and
 erratic winds associated with high based thunderstorms will be
 possible Saturday and Sunday afternoon and evening.
* IMPACTS...any fires that develop will likely spread rapidly.
 Outdoor burning is not recommended.
Alert: Red Flag Warning
Area(s): Lincoln and Uinta Counties/Lower Elevations; Upper Green River Basin/Rock Springs BLM; Sweetwater County/Rock Springs BLM/Flaming Gorge NRA; Granite/Green/Ferris/Rattlesnake Mountains
Effective: 2026-08-07 @ 1:27 pm -> 2026-08-08 @ 7:30 am
Onset: 2026-08-07 @ 1:27 pm -> 2026-08-07 @ 10:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Riverton WY on 2026-08-07 @ 1:27 pm
Headline: Red Flag Warning issued August 7 at 12:27PM MDT until August 7 at 9:00PM MDT by NWS Riverton WY
Description: The National Weather Service in Riverton has issued a Red Flag
 Warning, which is in effect from 11 AM Saturday to 9 PM MDT
 Sunday.
* IMPACTS: Low Humidities and Strong Gusty Winds could cause
 erratic fire behavior.
* AFFECTED AREA:
 In Central WY Fire Zone....289.
 In Southwest WY Fire Zones...277...279.
 In West Central WY Fire Zone....278.
* COUNTIES AFFECTED:
 In Central WY...Fremont...Natrona.
 In Southwest WY...Sweetwater...Uinta.
 In West Central WY...Lincoln...Sublette.
* WIND: West 10 to 20 mph with gusts up to 35 mph.
* HUMIDITY: As low as 8 percent. Humidity recovery each night will
 remain below 40 percent.
Alert: Red Flag Warning
Area(s): Yellowstone National Park; North Bighorn Basin/Worland BLM; Cody Foothills; Natrona County/Casper BLM; Johnson County/Casper BLM; South Bighorn Basin/Worland BLM; Upper Wind River Basin/Wind River Basin; South Bighorn Mountains; Absaroka Mountains/North Shoshone NF; Owl Creek Mountains; Casper Mountain
Effective: 2026-08-07 @ 1:27 pm -> 2026-08-08 @ 7:30 am
Onset: 2026-08-08 @ 12:00 pm -> 2026-08-09 @ 10:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Riverton WY on 2026-08-07 @ 1:27 pm
Headline: Red Flag Warning issued August 7 at 12:27PM MDT until August 9 at 9:00PM MDT by NWS Riverton WY
Description: The National Weather Service in Riverton has issued a Red Flag
 Warning, which is in effect from 11 AM Saturday to 9 PM MDT
 Sunday.
* IMPACTS: Low Humidities and Strong Gusty Winds could cause
 erratic fire behavior.
* AFFECTED AREA:
 In Central WY Fire Zones...280...283...285...300.
 In North Central WY Fire Zones...275...276...281...282...287.
 In Northwest WY Fire Zones...140...286.
* COUNTIES AFFECTED:
 In Central WY...Fremont...Natrona.
 In North Central WY...Big Horn...Hot Springs...Johnson...Park
 Washakie.
 In Northwest WY...Yellowstone National Park.
* WIND: Northwest 10 to 20 mph with gusts up to 30 mph.
* HUMIDITY: As low as 8 percent. Humidity recovery each night remains
 below 40 percent.
Alert: Red Flag Warning
Area(s): East Wind River Mountains/South Shoshone NF
Effective: 2026-08-07 @ 1:27 pm -> 2026-08-08 @ 7:30 am
Onset: 2026-08-08 @ 12:00 pm -> 2026-08-09 @ 10:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Riverton WY on 2026-08-07 @ 1:27 pm
Headline: Red Flag Warning issued August 7 at 12:27PM MDT until August 9 at 9:00PM MDT by NWS Riverton WY
Description: The National Weather Service in Riverton has issued a Red Flag
 Warning, which is in effect from 11 AM Saturday to 9 PM MDT
 Sunday.
* IMPACTS: Low Humidities and Strong Gusty Winds could cause
 erratic fire behavior.
* AFFECTED AREA:
 In Central WY...Fire Weather Zone 288.
* COUNTIES AFFECTED:
 In Central WY...Fremont.
 In West Central WY...Sublette.
* WIND: West 15 to 25 mph with gusts up to 40 mph.
* HUMIDITY: As low as 9 percent. Humidity recovery each night will
 remain below 40 percent.
Alert: Red Flag Warning
Area(s): Lincoln and Uinta Counties/Lower Elevations; Upper Green River Basin/Rock Springs BLM; Sweetwater County/Rock Springs BLM/Flaming Gorge NRA; Granite/Green/Ferris/Rattlesnake Mountains
Effective: 2026-08-07 @ 1:27 pm -> 2026-08-08 @ 7:30 am
Onset: 2026-08-08 @ 12:00 pm -> 2026-08-09 @ 10:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Riverton WY on 2026-08-07 @ 1:27 pm
Headline: Red Flag Warning issued August 7 at 12:27PM MDT until August 9 at 9:00PM MDT by NWS Riverton WY
Description: The National Weather Service in Riverton has issued a Red Flag
 Warning, which is in effect from 11 AM Saturday to 9 PM MDT
 Sunday.
* IMPACTS: Low Humidities and Strong Gusty Winds could cause
 erratic fire behavior.
* AFFECTED AREA:
 In Central WY Fire Zone....289.
 In Southwest WY Fire Zones...277...279.
 In West Central WY Fire Zone....278.
* COUNTIES AFFECTED:
 In Central WY...Fremont...Natrona.
 In Southwest WY...Sweetwater...Uinta.
 In West Central WY...Lincoln...Sublette.
* WIND: West 10 to 20 mph with gusts up to 35 mph.
* HUMIDITY: As low as 8 percent. Humidity recovery each night will
 remain below 40 percent.
Alert: Red Flag Warning
Area(s): East Wind River Mountains/South Shoshone NF
Effective: 2026-08-07 @ 1:27 pm -> 2026-08-08 @ 7:30 am
Onset: 2026-08-07 @ 1:27 pm -> 2026-08-07 @ 10:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Riverton WY on 2026-08-07 @ 1:27 pm
Headline: Red Flag Warning issued August 7 at 12:27PM MDT until August 7 at 9:00PM MDT by NWS Riverton WY
Description: The National Weather Service in Riverton has issued a Red Flag
 Warning, which is in effect from 11 AM Saturday to 9 PM MDT
 Sunday.
* IMPACTS: Low Humidities and Strong Gusty Winds could cause
 erratic fire behavior.
* AFFECTED AREA:
 In Central WY...Fire Weather Zone 288.
* COUNTIES AFFECTED:
 In Central WY...Fremont.
 In West Central WY...Sublette.
* WIND: West 15 to 25 mph with gusts up to 40 mph.
* HUMIDITY: As low as 9 percent. Humidity recovery each night will
 remain below 40 percent.
Alert: Red Flag Warning
Area(s): Gallatin National Forest; Wheatland County/Sweet Grass County; Stillwater County; Beartooth Ranger District Custer National Forest; Golden Valley County/Musselshell County; Yellowstone County; Crow Indian Reservation/Big Horn Canyon Rec Area; Northern Rosebud/Northern Treasure Counties; Northern Cheyenne Indian Reservation/Ashland Ranger District Custer Natl Forest; Custer County; Sioux Ranger District Custer National Forest; Sheridan County/Casper BLM; Bighorn National Forest
Effective: 2026-08-07 @ 1:13 pm -> 2026-08-08 @ 1:15 pm
Onset: 2026-08-08 @ 12:00 pm -> 2026-08-08 @ 10:00 pm
Severity: Severe
Certainty: Likely
Urgency: Expected
Issued By: NWS Billings MT on 2026-08-07 @ 1:13 pm
Headline: Red Flag Warning issued August 7 at 12:13PM MDT until August 8 at 9:00PM MDT by NWS Billings MT
Description: The National Weather Service in Billings has issued a Red Flag
 Warning...which is in effect from 11 AM to 9 PM MDT Saturday. The
 Fire Weather Watch is no longer in effect.
* IMPACTS: Low humidities, hot temperatures, and strong gusty winds
 will create erratic fire behavior.
* AFFECTED AREA:
 In North Central WY Fire Zones...274...284.
 In South Central MT Fire Zones...123...124...125...126...127
 128...129.
 In Southeast MT Fire Zones...130...131...132.
 In Southeast MT and Northwest SD Fire Zone...133.
* COUNTIES AFFECTED:
 In Central MT...Golden Valley...Musselshell...Wheatland.
 In North Central WY...Big Horn...Johnson...Sheridan...Washakie.
 In Northwest SD...Harding.
 In South Central MT...Big Horn...Carbon...Park...Stillwater
 Sweet Grass...Yellowstone.
 In Southeast MT...Carter...Custer...Fallon...Powder River
 Rosebud...Treasure.
 In Southwest MT...Gallatin.
* WIND: Northwest 10 to 20 mph with gusts to 30 mph.
* HUMIDITY: Minimums of 7 to 14 percent.
* TEMPERATURES: Highs of 93 to 101 degrees.
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; 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
Effective: 2026-08-07 @ 1:10 pm -> 2026-08-08 @ 2:00 pm
Onset: 2026-08-07 @ 1:10 pm
Severity: Unknown
Certainty: Unknown
Urgency: Unknown
Issued By: NWS Riverton WY on 2026-08-07 @ 1:10 pm
Headline: Air Quality Alert issued August 7 at 12:10PM 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...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/.
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; Teton and Gros Ventre Mountains; Jackson Hole; Upper Wind River Basin; Wind River Basin; Lander Foothills
Effective: 2026-08-07 @ 12:42 pm -> 2026-08-08 @ 2:00 pm
Onset: 2026-08-07 @ 12:42 pm
Severity: Unknown
Certainty: Unknown
Urgency: Unknown
Issued By: NWS Riverton WY on 2026-08-07 @ 12:42 pm
Headline: Air Quality Alert issued August 7 at 11:42AM 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....All of Western and Central Wyoming
* WHEN...Noon Friday 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/.
Alert: Air Quality Alert
Area(s): Converse County Lower Elevations; Niobrara County; North Laramie Range; Ferris/Seminoe/Shirley Mountains; Shirley Basin; Central Laramie Range and Southwest Platte County; East Platte County; Goshen County; Central Carbon County; North Snowy Range Foothills; Southwest Carbon County; Sierra Madre Range; Upper North Platte River Basin; Snowy Range; Laramie Valley; South Laramie Range; South Laramie Range Foothills; Central Laramie County; East Laramie County
Effective: 2026-08-07 @ 12:19 pm -> 2026-08-08 @ 2:00 pm
Onset: 2026-08-07 @ 12:19 pm
Severity: Unknown
Certainty: Unknown
Urgency: Unknown
Issued By: NWS Cheyenne WY on 2026-08-07 @ 12:19 pm
Headline: Air Quality Alert issued August 7 at 11:19AM MDT by NWS Cheyenne 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...All of Southeast Wyoming
WHEN...Noon Friday through Noon Monday
IMPACTS...Heavy smoke from distant wildfires
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 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.
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: 2026-08-07 @ 12:03 pm -> 2026-08-10 @ 1:00 pm
Onset: 2026-08-07 @ 12:03 pm
Severity: Unknown
Certainty: Unknown
Urgency: Unknown
Issued By: NWS Billings MT on 2026-08-07 @ 12:03 pm
Headline: Air Quality Alert issued August 7 at 11:03AM 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 noon Monday.
IMPACTS...Heavy smoke from regional 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): 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; Upper Wind River Basin; Wind River Basin; Lander Foothills
Effective: 2026-08-07 @ 11:56 am -> 2026-08-08 @ 2:00 pm
Onset: 2026-08-07 @ 11:56 am
Severity: Unknown
Certainty: Unknown
Urgency: Unknown
Issued By: NWS Riverton WY on 2026-08-07 @ 11:56 am
Headline: Air Quality Alert issued August 7 at 10:56AM 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....All of Western and Central Wyoming
* WHEN...Noon Friday 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/.
Alert: Air Quality Alert
Area(s): Southwest Wyoming
Effective: 2026-08-07 @ 11:51 am -> 2026-08-10 @ 1:00 pm
Onset: 2026-08-07 @ 11:51 am
Severity: Unknown
Certainty: Unknown
Urgency: Unknown
Issued By: NWS Salt Lake City UT on 2026-08-07 @ 11:51 am
Headline: Air Quality Alert issued August 7 at 10:51AM MDT by NWS Salt Lake City UT
Description: The following is transmitted in collaboration with the Wyoming
 Department of Environmental Quality, Air Quality Division and the
 Wyoming Department of Health until noon MDT Monday.
* WHAT...Air Quality Alert for Wildfire Smoke.
* WHERE...Uinta County in southwest Wyoming.
* WHEN...Noon MDT Friday through Noon MDT Monday
* IMPACTS...Heavy smoke from the northwestern United States has been
 observed across southwest Wyoming.
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 provides 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: 2026-08-07 @ 11:46 am -> 2026-08-10 @ 1:00 pm
Onset: 2026-08-07 @ 11:46 am
Severity: Unknown
Certainty: Unknown
Urgency: Unknown
Issued By: NWS Rapid City SD on 2026-08-07 @ 11:46 am
Headline: Air Quality Alert issued August 7 at 10:46AM 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 Noon MDT Monday.
* IMPACTS...Poor air quality due to wildfire smoke.