Add Yahoo as a preferred source to see more of our stories on Google. Arctic air is plunging south from Canada into the Northern US, bringing bitter cold temperatures to much of the region. Wind ...

Canadian wildfire smoke is billowing south across the U.S. border, shrouding much of the Upper Midwest and Northern Tier and degrading air quality to hazardous levels. Air-quality alerts cover the ...

Smoke from Canadian wildfires continues to blanket parts of the Midwest and Great Plains, leading to air quality alerts across several states. More than 90 fires scattered across Canada are burning ...

MINNEAPOLIS — Smoke from Canadian wildfires carried another day of poor air quality south of the border to the Midwest, where conditions in parts of Minnesota, Wisconsin and Michigan were rated “very ...

Arctic air is plunging south from Canada into the Northern US, bringing bitter cold temperatures to much of the region. Wind chills below zeros are possible for parts of the Upper Midwest through the ...