The documentary maker warned it could lead to the collapse of civilisations and the extinction of "much of the natural world".
Katowice is in the heart of Poland's coal mining region of Silesia, and there are several active mines in and around the city.
The UN chief chided countries, particularly those most responsible for greenhouse gas emissions, for failing to do enough to back the 2015 Paris climate accord, which set a goal of keeping global warming well below 2 degrees Celsius, ideally 1.5 degrees C, by the end of the century.
Attenborough's address drew on messages from people all over the world, conveying a sense of frustration over apparent global inertia toward the looming disaster of climate change.
Governments around the world are taking aim at combatting climate change.
It also stated that its full implementation prompts countries to have practical actions to such elements as "adaptation to climate change impacts", "ambitious emission reductions" and "strong means of implementation to support developing countries in the form of technology cooperation, capacity building, and, especially financial support".
However, US President Donald Trump's decision to withdraw from the Paris accord has dented trust among vulnerable nations, who fear there is not enough cash available to help them adapt to our heating planet.
"A failure to act now risks pushing us beyond a point of no return with catastrophic consequences for life as we know it", said Amjad Abdulla, chief negotiator at the COP24 for the Alliance of Small Island States.
CFO of China tech giant Huawei Technologies arrested in Vancouver
However, according to the Globe and Mail , she was arrested on suspicion she violated USA trade sanctions against Iran. The report said existing Huawei equipment at the firm's current 3G and 4G networks would also be removed.
Guterres, who spoke at the opening of the United Nations climate conference in Poland, called climate change "the most important issue we face".
Four former leaders of United Nations talks, including Laurent Fabius of France, who led negotiations for the Paris agreement, issued a statement urging immediate action.
The special report on Global Warming of 1.5 C said "rapid and far-reaching transitions in energy, land, urban and infrastructure (including transport and buildings) and industrial systems" would be required to limit global warming to 1.5 degrees.
That analysis and a review of progress against national commitments under the Paris Agreement makes clear that the current pace of national action is insufficient to meet the Paris targets.
"Or, God forbid, [we] ignore the irrefutable evidence and become the generation that betrayed humanity", Bainimarama said.
Citing various alarming UN reports including one on rising global Carbon dioxide emissions and another one on increasing greenhouse gas concentrations in the atmosphere he called on nations to pay attention to the science and step up their pace as well as their ambitions.
"I have been present in climate negotiations for about 15 to 20 years". It was dwarfed by marches in Brussels, Berlin and Cologne over the weekend calling for greater action to curb climate change.
Guterres urged developed nations to deliver on this commitment, while urging Member States "to swiftly implement the replenishment of the Green Climate Fund".