Wildfire smoke from Canada is prompting health warnings in the U.S. again

Air quality advisories were issued Sunday for parts of Montana, the Dakotas, Minnesota and Wisconsin due to haze emitting from fires burning across western Canada.

Wildfire smoke from Canada is prompting health warnings in the U.S. again
Air quality advisories were issued Sunday for parts of Montana, the Dakotas, Minnesota and Wisconsin due to haze emitting from fires burning across western Canada.