Well according to the Nobel Prize-winning UN Intergovernmental Panel on Climate Change, that agreement was inadequate.
"The pledges nations made in the Paris agreement in 2015 are 'clearly insufficient to limit warming to 1.5 in any way,' one of the study's lead authors, Joerj Roeglj of the Imperial College in London, said."
See: "UN report on global warming carries life-or-death warning"