SANTA ANA, Calif. — Hundreds of firefighters battled flames and triple-digit temperatures Saturday as they tried to contain a wildfire that forced people to flee about 30 homes near Southern California’s Cleveland National Forest.

The fire, which burned through about 2 1/2 square miles of dry canyon brush, was only about 10 percent contained Saturday, said Deanne Thompson, a spokeswoman for the Orange County Emergency Operations Center.

Meanwhile, both heat and smoke advisories were in effect for the area, with temperatures forecast to reach as high as 105 degrees between Saturday and Tuesday.

On Friday, officials ordered the evacuation of about 30 homes in the area. None were reported burned, and authorities said it was just a precaution, but residents remained out of their homes Saturday.

More than 700 firefighters, aided by six helicopters and five fixed-wing aircraft, battled the blaze, which was first reported Friday morning. It was expected to continue to grow before it is contained, although no more structures were immediately threatened.

The flames sent up a towering column of smoke that could be seen for miles throughout Southern California.

Although temperatures were high, firefighters who worked in the steep terrain were aided by light winds. Three firefighters suffered minor injuries.