President Donald Trump said on Monday he doesn't believe a climate report out of his administration that warns of dire economic costs in the wake of climate change.

'I don't believe it,' he told reporters at the White House before he left for campaign rallies in Mississippi.

'I've seen it, I’ve read some of it, and it’s fine,' he added.

President Donald Trump said on Monday he doesn't believe a climate report out of his administration that warns of dire economic costs in the wake of climate change

Trump was responding to a stunning report released by his administration that said climate change will cost the U.S. economy hundreds of billions of dollars

He also seemed to push the blame to other nations, saying the United States is 'the cleanest we've ever been.'

'And here's the other thing, you're going to have to China and Japan and all of Asia and all of these other countries, you know, it addresses our country. Right now we're the cleanest we've ever been. And that's very important to me. But if we're clean, but every other place on Earth is dirty, that's not so good, so I want clean air, I want clean water, very important,' he said.

The president was responding to a stunning report released by his administration Friday that said climate change will cost the U.S. economy hundreds of billions of dollars by the end of the century, damaging everything from human health to infrastructure and agricultural production.

The report came out on Black Friday, a holiday for most Americans and one of the busiest shopping days of the year, leading critics to charge Trump with trying to bury the findings.

The Congressionally-mandated report, written with the help of more than a dozen U.S. government agencies and departments, outlined the projected impacts of global warming in every corner of American society, in a dire warning at odds with the Trump administration's pro-fossil fuels agenda.

'With continued growth in emissions at historic rates, annual losses in some economic sectors are projected to reach hundreds of billions of dollars by the end of the century - more than the current gross domestic product (GDP) of many U.S. states,' according to the report.

It said global warming would disproportionately hurt the poor, broadly undermine human health, damage infrastructure, limit the availability of water, alter coastlines, and boost costs in industries from farming to energy production.

Trump's administration - through his EPA - has rolled back or repealed nearly every climate policy former President Obama put into place, including greenhouse gas rules for power plants, cars and oil and natural gas drillers.

The president also took the United States out of the Paris Climate Accords.

Trump and several members of his cabinet have also repeatedly cast doubt on the science of climate change, arguing the causes and impacts are not yet settled.

Environmental groups said the report reinforced their calls for the United States to take action on climate change.

The report came out on Black Friday, one of the busiest shopping days of the year, leading critics to charge Trump with trying to bury the findings

'This report makes it clear that climate change is not some problem in the distant future. It's happening right now in every part of the country,' said Brenda Ekwurzel, the director of climate science at the Union of Concerned Scientists and one of the report's authors.

Previous research, including from U.S. government scientists, has also concluded that climate change could have severe economic consequences, including damage to infrastructure, water supplies and agriculture.

Severe weather and other impacts also increase the risk of disease transmission, decrease air quality, and can increase mental health problems, among other effects.

Thirteen government departments and agencies, from the Agriculture Department to NASA, were part of the committee that compiled the new report.

The entire report can be viewed here.