I once got my engine overheated and I drove few more kilometres to the mechanics.
When I arrived, he told me that I was very lucky my engine didn't broke down coz it was operating under intense heat.
Changed my radiator. Costs me 180.
My car has been good since then. Until month later.
I was stucked in a traffic jam (with air-cond on) and the temp was rising to 3/4 (Near the overheat mark).
I switched off air-cond. Still the same. Drove few more kilometres and the temp going down.
Till now I had this problem. Temperature rising when not moving.
Checked the radiator fan (it's working).