President Joe Biden and Canadian Prime Minister Justin Trudeau spoke Wednesday about the wildfires in Canada, the White House said.

Biden offered additional assistance and also discussed the health impact of the fires, according to the White House.

“To date, the United States has deployed more than 600 U.S. firefighters and support personnel, and other firefighting assets to respond to the fires,” the White House said in a statement.

Trudeau also tweeted that “hundreds” of American firefighters have arrived in Canada, “and more are on the way.”

-ABC News’ Ben Gittleson