You can blame Canadian wildfires for some of the haze and smoke in the area this morning. Most of the state, including Door and Kewaunee counties, is in an air quality alert until 10 a.m. on Monday. According to the National Weather Service, the air quality will be unhealthy for sensitive groups to Unhealthy PM2.5 Air Quality Index categories. The smoke will continue moving from northwest to southeast behind a cold front, likely impacting the entire state later in the day. Since the air quality could be unhealthy, people with heart or lung disease, older adults, and children should avoid prolonged or heavy exertion while everybody else should reduce it.