The fire, which erupted September 9th, was 74 percent contained after destroying 160 structures and damaging 34 others. Approximately 20,780 structures remain threatened.

Containment of the Airport Fire in Orange and Riverside counties jumped from 74% to 81%overnight, Cal Fire reported Monday “[The] black line around the fire perimeter continues to grow each day, a sign of firefighter focus and dedication toward keeping the Airport Fire within its current footprint,

Fire crews continued establishing containment lines around the Airport fire, achieving 31% containment of the blaze by Monday afternoon, Sept. 16, authorities said. The size of the fire has remained around 23,500 blackened acres since authorities said forward progress was stopped Friday evening, Sept. 13, at which point containment was at 9%.

Firefighters are making progress battling the massive Airport Fire today in Orange and Riverside counties, where 23,519 acres have been charred with containment now at 19%.

Firefighters are making progress Monday battling the massive Airport Fire in Orange and Riverside counties, where 23,519 acres have been charred with containment at 31%.

Cooler temperatures, high humidity and a thickening marine layer are expected to help slow the rate of the spread and help firefighting efforts, officials said. However, there is still a risk of smoke forming in the afternoon, with an impact on air quality and visibility.