Threat from SA fire reduced

The threat from a bushfire on South Australia's Fleurieu Peninsula has reduced but may still pose risks, the Country Fire Service says.

The fire is at Willunga near Kings Hill Road, Marshal Road, Edwards Road and Jackson Hill Road.

Residents were earlier warned it could threaten lives, but the CFS on Monday night said the threat had reduced.

"There may be smoke in the area," the CFS said.

"Visibility may be reduced and there may be falling trees.

"Check your property for any fires and embers, particularly in roof spaces, under decks, raised floors and in gutters."

The bushfire warning has been downgraded, from a watch and act to advice message.