It's now mandatory nationwide to wear a mask in airport terminals as part of the fight against the spread of COVID-19 directed by the National Cabinet.

At the weekend the NSW public health order related to mandatory face coverings was amended to include their use indoors at airports and on domestic commercial aircraft as of Tuesday.

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Councils which own and operate airports are making arrangements in order to comply, including Armidale Regional Council which is providing masks for free to people who forget them.

Armidale Regional Council's general manager James Roncon said it was an important step to ensure the region remained free of the virus.

"If you are in the terminal, you must wear a mask, and by providing free face masks within the airport, we are ensuring Armidale Regional Council is on the front foot of the region's response to the latest outbreaks," he said.

"We are encouraging the public to bring their own face mask, however, we have made sure there are masks available for those who forget to bring one."

Dubbo City Regional Airport (DCRA) manager Jacki Parish says anyone entering its terminal must wear a mask "regardless of whether they are catching a flight or not".

"We have partnered with local charity group Pink Angels, who will have reusable masks available for purchase at the terminal, should passengers arrive without their own mask," she said.

Dubbo Regional Council has also advised of working with NSW Health and NSW Police to check the temperatures of passengers arriving at Dubbo City Regional Airport from Brisbane.

The tests will be carried out in a "separate area to the main terminal".

"It's important that we work together to implement these new regulations, and it's important we remain vigilant at all times in our own hygiene practices," Ms Parish said.

"Our DCRA staff are continuously cleaning and sanitising high-traffic areas, and ensuring hand sanitiser stations remain full."