A thin veil of smoke from wildfires burning in Canada is worsening air quality and putting a lid on temperatures in the D.C.

Smoke from wildfires in Canada continue to impact air quality in the northern United States, even in the New York City metro ...

As smoke begins to dissipate, Michigan's statewide advisories have ended, though some remain for Upper Peninsula and northern ...

Smoke from Canadian wildfires is causing air quality concerns for millions of Americans in the Midwest and Northeast.  Air ...

The smoke drifting across the border contains fine particulates, pollution so small that it’s basically invisible to the ...

Air quality has taken a serious hit across the United States as a two-fold blow of wildfires in the West and in Canada have ...

As Canada grapples with one of its worst wildfire seasons on record, smoke from the blazes have prompted air quality alerts ...

There are no air quality alerts for New Jersey on Wednesday with the thickest smoke expected to remain north and west of the ...

Several rounds of wildfire smoke have been moving into Denver, Boulder, Fort Collins and communities up and down the I-25 ...

Plus, ABC News’ Chief Meteorologist Ginger Zee has the latest on the second earthquake in less than a week on the East coast.

Hundreds of wildfires still burning in Canada are expected to undermine air quality across the Upper Midwest and Northeast ...

Each New England state has seen an uptick in the number of days over the last five years when fine particulate matter (PM2.5) ...