Smoke from hundreds of wildfires in Canada has spread over 5,000 miles across the Atlantic over the last week — reaching as far as parts of Russia. Western Greenland and the Arctic Archipelago have also experienced smoky skies — over 1,

In the upper Midwest of the United States, Michigan, Wisconsin and Minnesota have issued air quality warnings as smoke from the Prairie wildfires is dragged south by a cold front. Those warnings expanded into the Northeast, causing some hazy skies.