Canadian wildfire smoke and a dust plume from Africa could collide over the South this week

Air quality is taking a hit in parts of the central and eastern United States as smoke from out-of-control wildfires in Canada pours south – but that isn’t the only thing millions of people will notice in the sky this week.

​ Air quality is taking a hit in parts of the central and eastern United States as smoke from out-of-control wildfires in Canada pours south – but that isn’t the only thing millions of people will notice in the sky this week. Read More Breaking News, Latest News and Videos | CNN