The smoky scene calls to mind the record-shattering Canadian wildfire summer of 2023, with smoke that choked Michigan and much of the U.S. for days at a time. Researchers say wildfire smoke is becoming a more regular part of Michigan summers.

As dozens of wildfires continue to burn across Canada, flames are sending far-reaching plumes of smoke into the sky and unhealthy air to distant places. Some of the more gigantic blazes have been delivering thick smoke that spread southward into the United States over recent days.