State scientists are calling Saturday an air quality action day with Canadian wildfire smoke moving in across New Hampshire.

Around noon on Saturday, New York City Emergency Management issued an air quality health advisory as the Big Apple’s air ...

But when smoke plumes are close to the surface, people are breathing in wildfire chemicals and tiny particles. Those particles, known as PM2.5, can get deep into the lungs and exacerbate asthma and ...

An air quality alert for the Tri-State Area has been extended through the weekend due to smoke from the Canadian wildfires.

An air quality alert was issued by the New York State Department of Health due to smoke from wildfires in Canada.

State officials from Maine to New York issued alerts for fine particulate matter, a toxic byproduct of wildfires that is small enough to be inhaled.

Smoke from Canadian wildfires pushed into New England Saturday, bringing hazy skies and unhealthy air quality to some spots, including Boston.

"A lot of the prairies within Canada, the prairie provinces, entered the fire season already starting out in a drought, and ...

A Hazardous Weather Outlook is also in effect across the region. The National Weather Service issued the outlook because of ...

Summer smoke from Canadian wildfires is once again hazing out Minnesota skies — just in time for your long-awaited Northwoods ...

Smoke from Canadian wildfires persisted across the Upper Midwest on Friday, prompting air quality alerts for millions.

Canadian wildfire smoke returns, bringing haze to Michigan. As of July 25, advisories are in effect for the U.P. and northern ...