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Watch: Wildfires in Canada cast blanket of smoke over multiple US cities

Some East Coast and Midwestern states continue to face hazardous and unhealthy air quality levels early Thursday, with noxious haze from Canada’s wildfires continuing to cross the border.

Philadelphia and Baltimore registered some of the worst air quality readings in the US with the level exceeding 300 on Thursday, a number considered hazardous, according to the Environmental Protection Agency’s AirNow map.

The low-pressure weather system that’s driving the smoke from wildfires in Canada to the US “will probably be hanging around at least for the next few days,” US National Weather Service meteorologist Bryan Ramsey said.

Cameras in Washington, D.C., Baltimore, and New York show the hazy conditions. Watch them live:


Read more about the smoke from the wildfires: