Aust will be a pariah if no climate action

Australia risks becoming a "global pariah" if the federal government doesn't step up efforts to tackle climate change, experts warn.

The Climate Council says with all G7 countries except Japan outlining their new emissions reduction targets ahead of the Paris summit, it's clear that most countries see it's in their national interest to take accelerating action.

"This is likely the first time in recent history that Australia has come under such sustained criticism from other countries over its domestic policies," chief councillor Tim Flannery said in a statement.