CASPER, Wyo. — An Air Quality Alert has been issued for a large swath of northwestern Wyoming, including Yellowstone and Grand Teton National Park, due to wildfire smoke.
The alert will remain in effect through 1 p.m. Thursday, July 22.
The Wyoming Department of Health and the Wyoming Department of Environmental Quality have issued the alert with poor air quality and decreased visibility expected.
“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,” the alert states. “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.”