Where to find Yungoos in Sun, Moon, Ultra Sun & Ultra Moon

SOS Encounter: Route 1, Route 2, Route 3 (Only in Sun & Moon) + 6 more
Walk: Route 1 (35%), Route 8 (30%), Kala’e Bay (30%) + 5 more
Surf: Verdant Cavern (100%, Only in Ultra Sun), Route 2 (70%, Only in Sun & Moon)
+ 1 more way

Yungoos also appears in

How to get Yungoos in Sun, Moon, Ultra Sun & Ultra Moon

Its base catch rate is 255 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 Heal Ball, Nest Ball or Ultra Ball.

Evolution: Yungoos → Gumshoos (Level 20).

Yungoos in every game · Pokémon Sun, Moon, Ultra Sun & Ultra Moon interactive map (Alola)