is the air pollution control agency for all of Orange County and the urban portions of Los Angeles, Riverside and San Bernardino counties
During late fall and early winter, the South Coast Air Quality Management District (South Coast AQMD) asks residents to participate in its "Check Before You Burn" program by not burning wood in fireplaces when unhealthful air quality is forecast. Under the program -- intended to help improve wintertime air quality --South Coast AQMD may issue mandatory no-burn alerts from November 1 through the end of February
No-burn alerts are issued for 24-hour periods for residential wood-burning fireplaces, backyard fire pits and wood stoves when emissions and stagnant weather conditions raise fine particulate pollution to unhealthy levels. Alerts are typically issued for the entire South Coast Air Basin, which encompasses all of Orange County and the non-desert portions of Los Angeles, Riverside and San Bernardino counties.