14.5 - 15 is ok.
it does look high on the gauge.
if you are worried about the alternator, i would uninstall it and get it tested.
autozone can run the test for you free of charge as long as you bring in the alternator.
they will be able to tell you if there is a problem with the voltage regulator inside the alternator.
if the voltage regulator is bad, you can have the option of replacing that piece or getting a new alternator. if you choose to replace that piece, and do all the labor yourself, you will be saving about 200$ off a rebuilt alternator.
as always, any ?, feel free to drop me a PM.
happy motoring.
Rob :smile: