The Minnesota Pollution Control Agency has issued an air quality alert for Pine and Carlton Counties.
According to the MPA, smoke from wildfires located north of the Canadian border in Ontario and Manitoba was taken by winds through the northern and central portions of the state.
Air pollution can aggravate heart and cardiovascular disease as well as lung diseases like asthma and COPD. When the air quality is unhealthy, people with these conditions may experience symptoms like chest pain, shortness of breath, wheezing, coughing, or fatigue.
The smoke is expected to remain over Minnesota through at least Friday, July 16.