Prescribed burns are planned at Fort Hunter Liggett over the next two weeks and the SLO County Air Pollution Control District says smoke may drift into San Luis Obispo County.
Starting Oct. 29 and weather permitting, a total of 1,230 acres of grass and brush will be burned on the southeast area of the base, located in Monterey County.
Five hundred acres were expected to be burned Monday.
The purpose of the burn is to reduce wildfire risk in the area, officials said.
Anyone whose health may be impacted by the smoke is advised to use caution if they begin to notice it.