Large wildfires in remote regions of Canada sent smoke billowing across the border, inundating northern New England with degraded air quality at the beginning of the week.

“These are related to forest fires going on in Canada,” Chris Legrow, meteorologist at the National Weather Service in Gray, Maine, said Tuesday morning. “Kind of a series there that are putting out smoke.”

Large fires burning across the provinces of Saskatchewan, Alberta and Manitoba are located in remote, difficult-to-access areas which are monitored but not dynamically fought. Wind blowing from west to east brings the smoke over New England, and causes the haze.

In some areas of New England, visibility was less than 6 miles on Tuesday. Legrow said Maine has cleared up more than New Hampshire, Vermont and Massachuse

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