LOS ANGELES — A ban on indoor and outdoor wood burning in much of the Southland was extended another 24 hours Tuesday due to a forecast of high air pollution in the area, air quality regulators said.

The residential wood-burning ban will be in effect until at least 11:59 p.m. Wednesday for all those in the South Coast Air Basin, including the non-desert portions of Los Angeles, Riverside and San Bernardino counties, and all of Orange County.

The order does not apply to mountain communities above 3,000 feet, the Coachella Valley or the high desert, according to the South Coast Air Quality Management District. Homes that rely on wood as a sole source of heat, low-income households and those without natural gas service also are exempt from the requirement.

Residents in the affected areas are reminded that burning wood in their fireplaces or any indoor or outdoor wood-burning device is prohibited, as is burning manufactured fire logs, such as those made from wax or paper.

Fine particles in wood smoke, also known as particulate matter or PM2.5, can get deep into the lungs and cause respiratory problems such as asthma.

Residents can receive no-burn day notifications by signing up for Air Alerts via email or text at www.AirAlerts.org.