SOS Encounter: Route 12 (15%, Only in Sun & Moon), Blush Mountain (15%), Mount Hokulani (15%, Only in Ultra Sun & Ultra Moon)
Looking for Electivire? It isn't found in the wild in this game — evolve Electabuzz.
Its base catch rate is 45 out of 255 (higher is easier); the catch rate calculator works out your odds with each ball. For the look, the best colour match is Ultra Ball or Level Ball.
Evolution: Elekid → Electabuzz (Level 30) → Electivire.
Electabuzz in every game · Pokémon Sun, Moon, Ultra Sun & Ultra Moon interactive map (Alola)