The body of Monica Rodas, a Union City resident, was found at about 4:40 a.m. Thursday at Ivanhoe and Chabot roads, police Officer Holly Joshi said.
Rodas appeared to have suffered trauma before her body was burned, and the case is being investigated as a homicide, police said.
Anyone with information on the case is asked to call the Police Department's homicide unit at (510) 238-3821.