A grass fire burned about 10 acres in Sunnyvale on Saturday morning, according to the California Highway Patrol.
Officials said that the flames were reported near State Route 237 and Caribbean Drive. Fire departments from Sunnyvale and San Jose responded to the fire, the CHP said.
A portion of SR-237 was closed until smoke that was blowing across it, cleared, officials noted.
The blaze was located in a wetlands area and created a lot of smoke, which was seen by people at Great America amusement park and Levi's Stadium.
Fire crews reported having an upper hand on the fire by 12:30 p.m. The cause of the blaze remains under investigation.
Further details were not immediately available.