PALM SPRINGS, Calif. -

For the third straight day, the South Coast Air Quality Management District today issued a smoke advisory for the Coachella Valley due to ash and smoke from the 22,800-acre brush fire in the nearby mountains.

The air quality could reach an unhealthy level, according to air quality officials, and residents should avoid vigorous outdoor activity, keep windows and doors closed and run an air conditioner.

Those with respiratory or heart disease, the elderly and children should remain indoors, according to the AQMD.

The advisory also covers parts of the Hemet/San Jacinto Valley and the Banning Pass.

The Mountain Fire, which started Monday in Mountain Center, has sent smoke and ash into the valley.

A map showing current air quality conditions is available online at www.aqmd.gov