“Not only are the emissions consistent with RCP8.5 in close agreement with historical total cumulative CO2 emissions (within 1%), but RCP8.5 is also the best match out to midcentury under current and stated policies with still highly plausible levels of CO2 emissions in 2100.”
And it’s not the current trend. We’re more on 4.5, which means 3° by the end of century. Not great, but not the worst.