Smoke and grit from hundreds of forest fires have spread across large parts of Canada and the northern US, sending air quality across the Midwest and northeast US and Toronto to unhealthy levels.

Portland and the rest of the southern coast of Maine is under moderate conditions for Ozone Monday. Smoke from Canadian wildfires is being pushed through the state ahead of a cold front, according to ...

From British Columbia to the Northwest Territories and all the way east to New Brunswick, air quality alerts have been issued ...

ALBANY — Smoke from Canadian wildfires will continue to worsen air quality across the region Monday morning and could reach ...

By Mitch Klein, Feven Gerezgiher and Juan Del Valle As result of severe wildfires in Canada, Minnesota is facing the longest air quality alert on record since the Minnesota Pollution Control Agency ...

Smoke from Canadian wildfires hovered over several Midwestern states Saturday, bringing warnings of unhealthy air.

Metro Detroit is looking at a mostly dry, warm, and increasingly humid week; but poor air quality remains a concern. Smoky ...

"Wildfire smoke looks to persist throughout Michigan through at least Monday as winds shift," said state meteorologist Alec Kownacki.

Air quality alerts from Canadian wildfire smoke spread to the Northeast on Sunday, stretching as far as northern Maine. It ...

Air quality alert through Monday for Canadian wildfire smoke. Expect a long, dry stretch of weather this week with a gradual ...

A shot to reach 90 degrees in spots on Monday and the humidity will not be all that high. However, expect more hazy sunshine and poor air quality. It'll be a dry day with just a low chance for a ...

The smoky air is predicted to reach New York City on Monday, and it could bring unhealthy air quality for sensitive groups.