MRL 360 Coolant Temp 210+

I have a 03 Dodge Ram with a 408 with 180º thermostat.
I have gauges installed in the truck that tell me the exact temp rather than cold and hot like the stock gauge. My gauge sits right on 210º or slightly under all the time in stop and go traffic.
Now when I had the old engine.. 5.9.. it would stay around the same temp.
What I'm trying to say is the 210º is most likely normal temp in stop and go traffic.
If it got any higher I would start being concerned.
When I get out on the open road with air flowing the temps goes down to 185º.