Heat Returns This Weekend In Duluth & Continues Into The WeekendAccording to the National Weather Service of Duluth, highs will peak in the 80s and 90s this weekend all across the area. I hope this heat wave is short lived, even though I am not quite ready for summer to be over just yet. The heat will linger into the early part of the week but overall, it looks like this weekend will be the hottest part of this mini heat wave. Ways To Improve Indoor Air Quality During Wildfire Smoke Wildfire smoke can have both short and long-term impacts on your health. Here's what the EPA recommends when it comes to improving air quality during periods of heavy wildfire smoke in your region.