In 2013 the Washington Post reported the climate findings from the prestigious journal Nature producing this chart.
Singapore is one of the cities expected to experience climate departure early (i.e., when the coldest year is warmer than the warmest year on record). Many cities will be there on average about 20 years later. This is because the impact will be noticed first among cities in the equatorial belt.
We are already seeing our weather warming every year. The year 2028 is not a magical number. It is the result of sophisticated modeling calculations. That year of climate departure could be off by several years. Whatever, we know what to expect. It is not pretty. Besides the heat there will be more cases of Dengue, Zika and many unwelcome developments.