Australia will not walk away from its commitment to the Paris agreement, Prime Minister Malcolm Turnbull says, despite the US President's decision to withdraw.

"The commitments we have made are in Australia's interests," Mr Turnbull said while on an official visit to Singapore today.

He said Donald Trump's decision to pull out of the Paris agreement was not a surprise.

"It was a very core campaign commitment of his," Mr Turnbull said.

"It is disappointing. We would prefer the United States to remain part of the agreement."

Sorry, this video has expired Josh Frydenberg says the Government is fully committed to the Paris Accord.

Labor has also labelled Mr Trump's decision disappointing, while the Greens have gone much further, with MP Adam Bandt calling him a "climate criminal" who should become a "world pariah".

"Trump has just threatened our security and our way of life. Time to dump Trump," Mr Bandt wrote on Twitter.

"Trump's 'axis of denial' is a greater threat to global security than terrorism."

Environment Minister Josh Frydenberg argued the agreement could still be meaningful without the US because more than 190 countries had signed on and 146 nations had ratified the deal.

Coalition MPs Eric Abetz and Ian Macdonald have said Australia should consider following the US move to withdraw from the Paris agreement.

Liberal senator Chris Back said the deal was too lenient to China and India and had been made "impotent" by America's withdrawal.

"If you add China, America and India you're probably looking at two thirds of the world's carbon dioxide or greenhouse gas emissions," he said.

"So that reason on its own would cause the whole accord to have to be renegotiated."

Labor's Environment Spokesman Mark Butler said he was concerned at that push but he was "somewhat reassured" Mr Frydenberg has committed to remaining part of the deal.

Mr Frydenberg said without the US, about 70 per cent of the world's emissions were covered by the Paris agreement.

And he urged the US to keep working to cut emissions, despite walking away from the Paris deal.

Federal Labor called the signing of the Paris accords by 195 countries the most significant global step towards action on climate change the world had ever made.

It has pushed for Mr Turnbull to press the United States to reconsider the decision to pull out.

It said Australia must step up its efforts to cut emissions.

One Nation Senator Malcolm Roberts, said Australia should not have joined the agreement at all, adding the country should "never side with foreign powers wanting to harm the economic security of our nation".