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

Millions from the Great Lakes to the Northeast are under air quality alerts – with the toxic smoke prompting a ground delay ...

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

With hundreds of wildfires burning across Canada, smoke has drifted into the northern United States, lowering air quality ...

Degraded and/or unsafe air quality levels will continue across parts of Canada Monday as wildfire smoke lingers. However, the ...

PM2.5 — is expected to push the Air Quality Index over 100, reaching levels unhealthy for sensitive groups, including ...

Right now, Canada has more than 700 wildfires actively burning. Some have been ongoing since May. Canadian officials said as ...

Forecasters say weak winds have left Canadian wildfire smoke to linger over the U.S. Stronger winds are expected to bring relief later in the week.

The worst air quality in recent years occurred in June 2023, when the smoke became so thick it created an orange haze over ...

Tuesday night is when the high pressure system shifts to the east, the NWS says. This should allow south winds to return, ...

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

More than 739 fires are burning in Canada, and smoke crossing the border has triggered air quality alerts in several U.S.