Aarij seems to be another spelling of Areej, which is an Arabic name for boys that means "good scent", "breeze that brings a good scent". It is not from the Quran, but Muslims can use it since it has a good meaning. It is pronounced [(U)p] + [p(R)ay + sw(EE)t + (J)ump] and written as أريج in Arabic. It can also be written as Arij, Areeje, Arige.
Areej has a version for girls, Areejah, which has the same meaning, pronounced [(U)p] + [p(R)ay + sw(EE)t] + [(JU)mp] and written as أريجة in Arabic. Areejah can also be written as Arijah, Areeja in English.