NSW has notched up three weeks without any new locally-transmitted coronavirus cases.
No positive results were returned from more than 12,000 tests in the 24 hours to 8pm on Friday, making it the 21st day without new cases.
Eight infections were diagnosed in hotel quarantine over the same period.
The milestone comes as NSW Health warns people to stay COVID-safe during the hot weather.
Those who can cool their homes through fans or air-conditioning are urged to stay home to avoid overcrowding in places like shopping centres where people may seek respite from the heat.
Beachgoers are asked to swim and then leave, so more people have an opportunity to enjoy the water and cool off.
Australian Associated Press