More than 100 million people nationwide are under air quality alerts due to wildfire smoke.

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

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

Las autoridades recomendaron reducir la exposición al aire libre, utilizar mascarillas cuando sea necesario salir y seguir el índice AQI para conocer la evolución de la situación

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…

Air quality levels in Chicago, Detroitt and New York reached dangerously high levels on Tuesday as the US cities were shrouded in smoke produced by wildfires raging through…

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A wave of toxic air flowing in from Canada to the US has transformed three major cities into the most unbreathable places on Earth.

"Controlled burns + thinning + clearing debris would go a long way in preventing this from happening every summer."

Wildfire smoke and bad air quality are hitting cities due to fires in Canada and Minnesota.

A think blanket of hazardous wildfire smoke spread from the Great Lakes to the East Coast on Thursday, putting millions of Americans at health risk.

NEW YORK: Heavy smoke from hundreds of wildfires in Canada enveloped a swath of the US from the Midwest to the...

Chicago's air quality has become hazardous due to Canadian wildfire smoke. This pollution has affected over 125 million people across the Midwest and Northeast. Health officials…

US states near the Canadian border including Minnesota, Wisconsin, Michigan and Illinois were particularly choked, while the Northeast including New York was also experiencing…

Pollution levels in the city were elevated as smoke from Canadian wildfires drifted south across a huge swathe of the US

Canadian wildfire smoke has plunged New York's air quality to hazardous levels, surpassing pollution in New Delhi and prompting widespread health warnings and emergency measures.

Heavy smoke from more than 800 wildfires burning across Canada enveloped a swath of the US from the Midwest to the Northeast on Thursday.