MINNEAPOLIS — Smoke from hundreds of wildfires burning in Canada has made its way south of the border again this weekend, filling skies of the Upper Midwest with haze and sending air quality to unhealthy levels.
A cold front swept through the area late this week, bringing a bout of northerly winds in its wake and drawing smoke from our neighbor to the north.
Air quality readings were already in unhealthy categories across much of Minnesota, with areas closer to the border reaching “very unhealthy” levels. Air quality will continue to worsen across Minnesota and Wisconsin on Saturday.
By Saturday evening, nearly all of Minnesota and Wisconsin, along with far eastern North Dakota and South Dakota, may be exposed to the smoke…