Wildfires in Canada are causing heavy smoke to spread over the US Midwest and Northeast. The smoke is being carried southeast by winds, prompting evacuations in a remote Minnesota wilderness area. Visitors to this area, accessible only by boat, were told to leave due to the dangerously heavy smoke.

The smoke has also led to warnings about unhealthy air conditions in areas including Minnesota, Toronto, and New York. Further details on the situation are available from the source, including information on the number of wildfires burning in Canada and advice from meteorologists on how to stay safe from the smoke and extreme heat.