Smoke from Canadian wildfires moved into Maine early Saturday morning, creating unhealthy air quality due to particulate pollution.

Air quality levels will be a concern throughout much of the day as smoke continues to move through the state, according to the Maine Department of Environmental Protection.

Pollution levels are expected to be designated as unhealthy for sensitive groups in western Maine, in the Midcoast, coastal Down East, and eastern interior areas, and moderate in northern Maine.

The DEP recommends limiting outdoor activities, and people sensitive to poor air quality, including older adults, children and people with preexisting conditions, should stay indoors. Concern is especially high for those participating in the Augusta Iron Man race on Sunday.

Other recommendations include keeping windows shut, using fans or air conditioning to keep homes cool, and keeping medications on hand for those with breathing conditions like asthma.

Air quality is expected to be moderate across the state on Sunday.