The Rural Fire Service and Triple Zero (000) have received calls in the area from concerned residents about smoke in the area.
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NSW Rural Fire Service community safety officer Inspector David Stimson said there was no cause for concern.
"We've had an overnight temperature inversion layer which holds smoke close to the ground," Inspector Stimson said.
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"It's coming from major bushfires from around the state. It's moved into area overnight people have some concern.
"We'd like people to only ring Triple Zero (000) if they see a fire."
Mr Stimson said as the day warms up, the temperature inversion layer would go and the smoke will drift away.
The fire danger rating for the Southern Highlands on Tuesday is high.
Residents are advised to review their bush fire survival plan with their families.
Highlanders are also asked to keep themselves informed, monitor conditions and be ready to act if necessary.
