President Obama in L.A. Wednesday
Obama is expected to arrive around 5:30pm. But the President's visit to California will only be a fleeting one with his departure scheduled just two hours after he arrives.
Obama's stop in Los Angeles is part of a grueling day on the campaign trail. He will spend the day campaigning in both Iowa and Colorado. After leaving California, he will then fly to Las Vegas where he will attend a Democratic campaign rally at Doolittle Park.
The Los Angeles Police Department has warned Wednesday's visit is likely to cause traffic delays.
"Every effort will be made to minimize traffic impact to the public while the President is traveling through the city," the LAPD said in a statement.
The streets around the Los Angeles International Airport and in Burbank where Leno's show is filmed are the most likely areas to be affected.
The President last appeared on "The Tonight Show" in October, 2011. Tonight's appearance will be his fifth time on the show.