A wildfire in the mountains above Santa Anita in Arcadia, Calif. has significantly curtailed visibility and affected training at the racetrack in recent days.
The fire, which began on Sept. 6, is burning in mountains to the northeast of the racetrack and covered more than 23,800 acres by early Friday, according to fire officials. The smoke was so severe that sunlight was noticeably reduced in Southern California, though not as much as in Northern California.