Several wildfires are burning in Southern California, prompting evacuations and threatening homes as they continue to grow quickly.

The Airport fire began burning on Monday, near an airport for remote-controlled planes southeast of Los Angeles, and has led to evacuation orders and recommendations in many communities in the area.

The largest of the fires in the area, the Line fire in San Bernardino County, has prompted evacuation orders for thousands of people.

Smoke was heaviest southeast of Los Angeles and widespread across the rest of Southern California.

Data from air sensors suggested that the air quality was diminished in several places around the Los Angeles area.

Air quality was also poor in the Northwest, including in Oregon and Idaho, where dozens more wildfires were burning.