Canada wildfires are causing hazardous smoke to drift into the U.S., lowering air quality across multiple states. Residents are advised to take health precautions as fires rage on. The post Canada Wildfires Spread Smoke,

A gray haze from wildfire smoke could be seen in Cincinnati, and the entire state of Minnesota is under an air quality alert.

Online map tools and resources let you track the Canadian wildfires and monitor poor air-quality conditions, which are impacting US states.