SOS Encounter: Route 2Walk: Route 2 (30%)Surf: Route 2 (35%, Only in Ultra Sun & Ultra Moon)
Its base catch rate is 190 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.
Evolution: Drowzee → Hypno (Level 26).
Drowzee in every game · Pokémon Sun, Moon, Ultra Sun & Ultra Moon interactive map (Alola)