hello i am not much familiar with RWS but if you can reach and comminicate with robot for expample RAPID files you can see joint acceleration,velocity,torque and current.About temperature i think your robots model must have joint temperature sensors like , PT100 or else depents on your robot model specs
Here is services about RWS ,
Thank you Mertkan for your thoughts! It's true you can get to the RAPID files via RWS and read parameters of a specific line, e.g. MOVEJ jTarget, speed, but this would be a target speed (which might be even not achieved during the movement if the consecutive points lie close too each other) and the question is if there is a way to read the current value of the joint/tcp speed via web services and regardless what is written in RAPID code?