Crews remain positioned in communities throughout the Simi Valley area to be able to respond to any flare-ups or hot spots that might spark.

Fire officials announced that they were monitoring the air quality around the fire's perimeter to ensure they could act quickly if harmful contaminants are detected

In this case, it means that 95% of the wildfire is contained from spreading, while 5% is still uncontrolled. Containment is part of a larger plan for managing a wildfire. It is normally expressed as a percentage and it refers to how much of the fire perimeter has been surrounded/enclosed by a control line that firefighters create.

Firefighters made significant progress on the Bain Fire in Riverside County overnight after it consumed more than 1,300 acres and injured four, authorities said. According to Cal Fire, containment of the blaze was up to 25% as of 5:58 a.

A fast-moving wildfire near Simi Valley continues to spread under gusty winds as firefighters race to increase containment.

Corral Fire initially started 1:32 p.m. May 16 at 110th St. W & W Avenue E, Lancaster in Los Angeles County, California. It has burned 160.7 acres after being active for 19 hours. By Sunday morning, the blaze has been fully contained. The cause of it remains under investigation.

Satellite images have revealed the scale of two wildfires spreading in southern California. The Sandy Fire ignited on Monday morning in the city of Simi Valley, north-west of Los Angeles, according to California Governor Gavin Newsom.

Grand Fire initially started 2:45 p.m. May 16 at 70th Street East & East Avenue G, east of Lancaster in Los Angeles County, California. It has burned 54.9 acres after being active for 18 hours. As of Sunday morning, the fire crew has achieved full containment of the blaze. However, the cause is still being investigated.