2007 BMW X3 overheating

It does temporarily stop climbing when idling, but the temp does not get any lower while doing so. Once i start driving again, it cobtinues to climb. Once it hits 3/4, it seems to jump straight to overheated.

You are low on coolant, or the main issue would be the radiator is restricted. One more test would tell, if it's heating while driving and you turn your heater on full blast, and that also helps with the temperature, your radiator is your problem.