The Gifford Fire, a wildfire burning in Central California that has destroyed over 82,000 acres in five days, continues to rage and is now accompanied by two additional fires emerging nearby, according to officials.

Air quality alerts are in effect on Tuesday in 10 states as toxic smoke from hundreds of wildfires burning in Canada continues to waft into the United States, creating hazy, gray skies over major metropolitan areas, including New York City.

The air quality in several U.S. states is taking a hit as smoke floats over the border from the Canadian wildfires. Here's what to know.