With Tuesday already labelled , the state's volunteer firefighters have begun dispatching in the thousands.
Some flew to the state's more worst-hit areas to join the firefighting effort.
More than 3,000 firefighters have been placed on standby ready to battle the day's fires.
Another 80 aircrafts were also prepared to deploy around NSW.
A catastrophic fire danger rating - the highest possible level - is in place for areas covering about 6 million residents.
More than 50 fires are burning across NSW - about half of which are not contained.
Australian Defence Force personnel have also been placed on standby to assist NSW's firefighters as needed.
Fire danger ratings remain high in other parts of the country, with winds expected to pick up on Wednesday.
In NSW, three fires remain at "emergency level" - two near Taree in mid-north NSW and another in northern NSW's Torrington.
Winds up to 60km/h hit northern NSW on Tuesday morning and are expected to on Wednesday.
NSW Fire and Rescue fighters were also sent around the state to areas most in need of assistance.
Rural Fire Service volunteers prepare to board a plane ahead of Tuesday's catastrophic fire danger. Source: Firefighter Dispatch
NSW firefighters wait at the airport before a long day's work begins. Source: Firefighter Dispatch
Firefighters prepare to take to the skies as NSW's bushfire threat soars. Source: Firefighter Dispatch
Parts of Sydney have also been upgraded to a 'catastrophic' fire rating. Source: Firefighter Dispatch
A week-long state of emergency has been declared. Source: Firefighter Dispatch
NSW prepares for a day of bushfire emergency. Source: Firefighter Dispatch
Country Fire Service volunteers are dispatched. Source: Firefighter Dispatch
These firefighters rose with the sun to prepare for Tuesday's increased fire danger. Source: Firefighter Dispatch
State Emergency Service volunteers also joined the effort. Source: Firefighter Dispatch
Fire and Rescue firefighters board a plane bound the fire zone. Source: Firefighter Dispatch
