I have a 2004 Jeep Grand 4.0 inline 6 with 116000 miles on it. Over the last day or two I have noticed very light smoke coming from up front by the radiator. You can only see the smoke when I am stopped. The oil pressure is fine and temp is running well within the norms. What would be causing this smoke? There is no burning metal smell and no smoke coming from exhaust.

Smoke from that area is likely steam. It's possible that you have some slight seepage from the radiator or one of the hoses up front. At this point, the coolant loss is very slight and you may not see much in the way of dripping but there may be a wet spot on or near whatever is leaking that you can locate after it's been run and shut down for about a half hour.
You can also have a shop do a fluorescent
dye test to locate the problem.
Catching any leak while it's this small can avoid major problems later, so don't ignore it...leaks don't get better, they get worse.

I've noticed lately that many people are reading many of the answers given here and not bothering to note if they were helpful. don't neglect to do that as well!!!!
Good luck