Drivers traveling over Michigan's Mackinac Bridge on Wednesday may experience a haze. However, officials say it is not fog but smoke.In a social media post, bridge officials say the smoke is coming from wildfires in Canada.

As Canadian wildfires burn, northern Michigan areas and the Upper Peninsula have been upgraded to an air quality alert. Here's what to know.

There's a haze in the sky across a large portion of the Midwest. The smoke coming from more than 210 fires burning in Canada, according to the Canadian Interagency Forest Fire Center, on Friday, June 6.