MADISON, Wis. (WRN) — Air quality is once again poor across much of Wisconsin.

Shifting weather patterns are once again pushing smoke from Canadian wildfires into the state, lowering air quality and making it hard to breathe.

If you’re going to be spending an extended period outside, be sure to wear a mask or air filter. Anyone with a lung or heart condition should avoid prolonged time outdoors.

You can keep an eye on the conditions online at airquality.wi.gov.