Canadian wildfire smoke returned to Wisconsin this weekend, with unhealthy levels for people with asthma and heart disease.

KSTP FORECAST FIRST ALERT TODAY FOR TWIN CITIES/WESTERN WISCONSIN BECAUSE OF CANADIAN WILDFIRE SMOKE PRODUCING UNHEALTHY LEVELS OF SMOKE: Northwest Winds blowing over Minnesota and Wisconsin Today will bring significant amounts of Smoke from Canada Wildfires – people with Respiratory Illness should avoid long periods of time outdoors Today through Sunday morning and even Healthy

The Wisconsin DNR says forecasts call for the air quality index to drop to the Unhealthy For Sensitive Groups to Unhealthy levels.