People with respiratory conditions or other health problems should limit outdoor activities, according to the North Dakota Department of Environmental Quality.
Smoky conditions from wildfires in northern Canada, along with some local agricultural burning, are causing air quality problems.
“Extremely small particles of ash and soot, or particulate matter, have been increasing over the last few hours across eastern North Dakota,” the department said in a Wednesday afternoon news release. “Particulate matter can irritate the respiratory system, especially for those who suffer from chronic obstructive pulmonary disease or conditions such as asthma and allergies.”
The high particulate numbers, along with higher temperatures, could extend for the next few days, the department said.
“At this time, most of the smoke impact seems to be concentrated in the eastern part of the state,” the news release said.