Video/ Canada wildfires cause worst-ever air pollution in NYC
A video recorded from morning to afternoon shows how the sky of New York City was quickly darkened by a cloud of smoke throughout the day.
The plume of smoke was the result of the Canadian fires. The air quality index rose to 324. This is the worst level since the Environmental Protection Agency began recording air quality measurements in 1999.
The video shows how even the towers disappear from view due to the smog.