Unfortunetly when ambient air temps get that hot , it is hard for a 200 deg motor to be cooled by 110 deg air. Shrouding the fan is one way to pull max air into the radiator.
When you shut the motor off it will push coolant into the expansion tank. That's why you have one. The coolant being under pressure needs a place to go due to the cap opening and releasing the pressure.
210 even 220 is not hot for the air temps you are driving in. Motors will get hot when there isn't enough air flow on the radiator.Sitting in traffic or just slow driving will cause temps to rise on a hot day. As long as the motor temps come down when you are out on the road at speed, it will be fine.