Images of a smoke-filled Manhattan were top of mind for many Minnesotans Thursday as they stepped outside into much better air. 

But those Canadian wildfires could pose a problem all summer long, according to Nick Witcraft, air quality forecaster for the Minnesota Pollution Control Agency.

"Typically for Canadian wildfires, their season starts in July, so this year it started in early May. You know, we saw those bouts of smoke in the middle May come down into Minnesota," Witcraft said.

To read the full story, visit the CBS Minnesota News site here.