States across the U.S. are feeling the impact of the Canadian wildfires as air quality takes a hit from the smoke, according to a government website that tracks air quality in the United States.

Air quality alerts continue for millions as wildfire smoke crosses the border from Canada. Plus, the intense heat fueling wildfires in the West.

Officials said they've sent several crews to assist in controlling the massive wildfires, and they don't expect them to stop until Canada sees some snow.

The wildfires that ravaged Los Angeles earlier this year — burning entire neighborhoods to the ground, straining firefighting resources and forcing tens of thousands of people to flee their homes — may have led to hundreds more deaths than were recorded,

Wildfires that devastated parts of the Los Angeles area in January indirectly led to hundreds of deaths in the ensuing weeks, far exceeding the official toll of 31 fatalities, according to a study released on Wednesday.

The figure, published on Wednesday in the medical journal JAMA, looks at deaths that have been attributed to factors caused by the wildfires, like poor air quality and delays in accessing healthcare.

More than 1,800 firefighters were deployed to the area close to the Spanish border

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