Air quality has taken a serious hit across the United States as a two-fold blow of wildfires in the West and in Canada have sent smoke pouring across large sections of the country — a problem that’s set to linger for days.

Over 1,000 firefighters continue to battle a wildfire in California that has over 72,000 acres, prompted evacuation orders and caused three injuries, according to officials. The Gifford Fire, which began on Friday afternoon,

Millions of Americans across the Midwest, Northeast and swathes of the South and Southwest are under air quality alerts Monday. Newsweek's live blog is closed.