Thick Canadian wildfire smoke has turned skies yellow over Boston and the Northeast, prompting Massachusetts to issue an air quality alert through Thursday.

Wildfires in Canada are pouring thick clouds of smoke into the US and will usher in unhealthy air quality for millions of people in Northeast and Midwest.

Wildfires in Canada are pouring thick clouds of smoke into the US and will usher in unhealthy air quality for millions of people in Northeast and Midwest.

Wildfire smoke has settled thickly in parts of New York, Connecticut, Wisconsin, Michigan and Minnesota—and it’s heading further south.

States warned residents about air quality issues that could last for days

Wildfires in Canada and Minnesota are sending heavy smoke to the Midwest and Northeast U.S., causing poor air quality alerts.

A massive plume of smoke from wildfires burning across Canada has swept into the United States, degrading air quality across the Midwest, Northeast and Mid-Atlantic.

The smoke from the Canadian wildfires is causing air quality issues in the U.S. See where.

Environment Canada has issued health warnings after sky over city turns yellow

Over 100 wildfires are burning in Canada, with winds carrying the smoke southeast. Warnings about unhealthy air extend from Minnesota through Toronto and into New York.

Warnings about dangerous, unhealthy air extended Wednesday from Minnesota through Toronto and into New York.

Thick Canadian wildfire smoke has turned skies yellow over Boston and the Northeast, prompting Massachusetts to issue an air quality alert through Thursday.

Residents have been warned to stay indoors to avoid both the smoke and the extreme heat

Roughly 100 wildfires are raging out of control in Ontario, sending smoke streaming more than 1,000 miles from their origin.

Massive plumes of Canadian wildfire smoke have started to pour over the border into the United States, bringing dangerous air quality to more than 100 million people in the…

Detroit and Minneapolis rank among the top major cities for poor air quality.

Wondering why it smells like smoke outside? Canadian wildfires are impacting millions in Ontario, Minnesota, Toronto, New York, Michigan, Wisconsin and Boston.

Millions of Americans face air quality alerts from Minnesota to New York as authorities urge people to stay indoors

Large swaths of the US remain under air quality warnings

NEW YORK (AP) — Heavy, pungent smoke from Canadian wildfires darkened skies in the U.S. on Thursday, from the Great Lakes to parts of the East Coast, reducing visibility for

The Manhattan skyline was obscured by thick haze and Chicago closed its beaches Thursday as out-of-control Canadian wildfires raged, sending smoke spewing into the United States…