The first of about 3,500 people who were evacuated from Afghanistan are beginning life in Australia.

The groups of mostly women and children have finished their Covid-19 mandated 14-day quarantine, after arriving in the country last month.

Happiness, hope, and concern for family members back home are the main emotions they are feeling, an aid worker said.

International airlifts began on 14 August when the Taliban arrived in Kabul.

As part of that effort, Australia evacuated 4,100 citizens and Afghans with visas, although some dual citizens chose to go elsewhere.

Assadullah Khurrami, a team leader at the Red Cross Humanitarian Settlement Program, said they are grateful for their escape but worry about those left behind.

"We have seen a few children who have come with heavy trauma," Mr Khurrami said.

"The evacuees are very grateful ... but at the same time there is a lot of desperation, a lot of sadness in these families, in these individuals, because they still have loved ones and family members left in Afghanistan."

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Mr Khurrami worked as an interpreter for the United Nations and allied forces in Afghanistan for eight years, before fleeing the country in 2010 and eventually entering Australia by boat as an asylum seeker.

"They have the material comfort in Australia, but they're spiritually and mentally still back in Afghanistan, concerned about their loved ones," he said.

Mr Khurrami said the Red Cross Humanitarian Settlement Program is able to help with many of the shorter-term challenges faced by refugees, such as housing, entering the workforce, education and material needs.

He said the biggest challenge for the evacuees will be their long-term response to their trauma.

The community response has been "overwhelming", he said, with many Western Australians opening their doors and emptying their pockets to support the integration process.

"There are a lot of people in here who have offered to provide accommodation, provide material goods, provide psychosocial support, provide welcome meals," Mr Khurrami said.

Australia was part of a NATO-led international force that trained Afghan security forces and fought the Taliban for 20 years after Western forces expelled them from power in 2001.