US President Joe Biden is doing "100% fine" after he tripped while walking up the stairs to board Air Force One—the presidential plane—earlier Friday, White House principal deputy press secretary Karine Jean-Pierre said, CNN reported.

"So, as you know, it's pretty windy outside, it's very windy. I almost fell coming up the steps myself," she said while briefings reporters on the plane on the way to Atlanta. "He is doing 100% fine."

"He's doing great. All I can tell you is he's doing fine. He's preparing for the trip today and he is doing just great," she said in response to a question.