Subject to conditions, the NSW Rural Fire Service is planning to undertake a 28 hectare hazard reduction burn in the Menai area on Saturday.
The advice comes at the same time as hazard reduction in other areas have been suspended for 24 hours to allow smoke from earlier burns to clear.
"The burn in the area known as Still Creek South will commence around 9am and conclude late afternoon," RFS Sutherland Shire said.
"Once completed it will provide protection to approximately 380 homes.
"Further information relating to the movement of smoke will be provided closer to the activity based on forecast weather.
"The Akuna (Bangor) burn located in the Woronora River Valley has been rescheduled to Saturday 1 June due to an isolated rain event last Saturday evening.
"A reminder that this activity will see changed traffic conditions on the Bangor Bypass."
NSW Rural Fire Service said on Wednesday night, "There will be no new burns conducted around Sydney over the next 24 hours".
NSW Health renewed its call for "people to take precautions as smoke from hazard reduction burns is expected to continue to impact air quality across Sydney into Thursday".
Director of Environmental Health Dr Richard Broome said smoke could irritate the respiratory system and aggravate existing lung and heart conditions.
"People with conditions like asthma, emphysema and angina are more likely to be sensitive to the effects of smoke," he said.
"Smoke from hazard reduction burns can be quite unpredictable, but we're expecting poor air quality in a number of places across the Sydney basin into Thursday morning.
"For most people, smoke will be no more than an irritation.
"However, I recommend that people with existing heart and lung conditions should avoid outdoor physical activity when there's smoke around.
"It's also important for people with asthma to follow their Asthma Action Plan and have their relieving medication with them."
Up-to-date information on air quality is available at: environment.nsw.gov.au/aqms/aqi.htm
In case of emergency always remember to dial Triple Zero. For more information, visit the NSW Health air quality web page at: health.nsw.gov.au/environment/factsheets/Pages/bushfire -smoke.aspx
