The big picture: It's not coincidental that the cities with the worst air quality last year were in the Upper Midwest and Mid-Atlantic, as those regions were smothered in smoke from Canada's ...

lawns across the Upper Midwest might soon receive their first coating of snow. A pattern shift is expected late next week, which is likely to bring the first taste of winter air and snowflakes to ...

Wildfire smoke from Canada returned to the upper Midwest and extended to the Mid-South and Mid-Atlantic this week, resulting in poor air quality in some regions along with reduced visibility.

With an Air Quality Index score of 1.13, officials said Madison’s high Midwest winds help to naturally remove air pollutants.