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

Hazy conditions will continue over Greater Lansing. Statewide advisory remains in place through Aug. 4, smoke forecast to lessen after Aug. 5.

The current rankings indicate that Detroit is more polluted than Kolkata, one of India's largest cities, and every other city ...

Coughing, sneezing, runny nose. Sure, those are signs of seasonal allergies, but they can also be caused by wildfire smoke.