


Air Quality Alert
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
Versions:
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073 AEUS75 KRIW 031652 AQARIW Air Quality Alert Message Relayed by National Weather Service Riverton WY 1052 AM MDT Wed Sep 3 2025 WYZ009>011-041700- Bighorn Mountains Southeast-Northeast Johnson County- Southeast Johnson County- Including the cities of Buffalo and Kaycee 1052 AM MDT Wed Sep 3 2025 ...AIR QUALITY ALERT IN EFFECT UNTIL 11 AM MDT THURSDAY... 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...Northeast Wyoming, including the eastern foothills of the Bighorn Mountains and lower elevations of Johnson County. * WHEN...Until 11 AM Thursday, September 4. * IMPACTS...Smoke from Western Canadian wildfires continues to be observed across much of northeastern 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/. $$