Rounds of smoke from hundreds of Canadian wildfires, as well as dust blowing off Sub-Saharan Africa, will continue to envelop portions of the United States into the summer, say AccuWeather meteorologists.

As hundreds of wildfires burn across Canada, smoke is traveling south and potentially affecting Americans’ health. Here's why it can be so dangerous.

Smoke from Canadian wildfires is engulfing much of the eastern and central United States and and is expected to continue for days.