Source : Webster's Revised Unabridged Dictionary (1913)

Moderateness \Mod"er*ate*ness\, n.
   The quality or state of being moderate; temperateness;
   moderation.

Source : WordNet®

moderateness
     n 1: the property of being moderate in price; "the store is
          famous for the reasonableness of its prices" [syn: {reasonableness},
           {modestness}]
     2: quality of being moderate and avoiding extremes [syn: {moderation}]
        [ant: {immoderation}]