Guterres said climate change is "undeniable", in a stark contrast to the position taken by Trump, who has previously called it a "a hoax" and last week shrugged off pressure from US allies during the G7 summit in Sicily to endorse the deal his predecessor Barack Obama worked passionately to achieve.
In his first major speech on climate change since he assumed charge as the head of the UN this January, the UN secretary-general said the "world is in a mess" and urged the international community to "stay the course" even if one government does not believe in the emissions-cutting deal.
"It is a reason to build ever broader coalitions - with civil society and business, with cities and states, with academia and community leaders," Guterres said yesterday.
His speech comes as Trump this week decides whether the US - the second-largest emitter of greenhouse gases after China - will adhere to the limit its emissions as layed out in the 2015 Paris climate agreement.
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He pointed out the seriousness of climate change and said its effects were dangerous and they were accelerating. The climate change could affect food production, water security and weather patterns "from Canada to India," he warned.
The climate pact urges countries to intensify the actions and investments needed for a sustainable low carbon future.
It also aims to strengthen the ability of countries to deal with the impacts of climate change and calls for scaled up financial flows, a new technology framework and an enhanced capacity-building framework to support action by developing countries and the most vulnerable countries in line with their own national objectives.
He said the nations which embrace green technologies will set the "gold standard" for economic leadership in the 21st century. "The falling cost of renewables is one of the most encouraging stories on the planet today," he said.
The UN chief stressed new renewable energy jobs now outstrip those created in the oil and gas industries in the US and China.
Major oil producers are also seeing the future and diversifying their economies, even Saudi Arabia has announced plans to install 700megawatts of solar and wind power.
"The real danger is not the threat to one's economy that comes from acting.It is, instead, the risk to one's economy by failing to act.The message is simple: The sustainability train has left the station.Get on board or get left behind," he said.
Laying out a five-point action plan to mobilise the world for climate action, Guterres said he will intensify political engagement with countries to increase efforts to limit temperature rise to well below 2 degree-Celsius and as close as possible to 1.5 degree-Celsius, the first point.
"That is where true change will be achieved," he said.
The UN chief added that he will work with UN member- states to mobilise national and international resources for adaptation and implementation of national climate action plans.