Flights at Logan airport were operating on a delay of 52 minutes due to low visibility on Monday afternoon, according to an advisory from the Federal Aviation Administration. Earlier on Monday, there was a brief ground stop at the airport "due to smoke and haze impacting operations," according to the FAA.

Air quality concerns continue to expand from the Upper Midwest through the Great Lakes region and into the Northeast and New England as wildfire smoke from Canada drifts southward into the U.S.