Courtesy South Coast Air Quality Management District
The areas shaded in orange are the locations where a 'no burn' alert has been issued for January 9, 2013.
A “no burn” alert is in effect through midnight Wednesday for parts of Los Angeles and Orange counties.
Sam Atwood, spokesman for the South Coast Air Quality Management District, said this is the third time the agency has issued an alert this winter.
“During the winter, we can get these low-level temperature inversions which trap the smoke from the fireplaces low to the ground and can contribute to unhealthy air quality," he said.
A “no burn” alert means residents in affected areas cannot burn wood or manufactured logs in fireplaces or outdoor fire pits.
(RELATED: View the interactive map)
Atwood said AQMD's "Check Before You Burn" program runs from November through the end of February. During that time, the agency has anticipated 10-15 no burn days. Atwood said there was not a single "no burn" issued last winter in Southern California.
To learn if a mandatory no-burn alert has been issued for a particular area of Southern California, residents can: