Weak toGroundGhostPsychicDark ×1.6

Attacker	Type	Moveset	DPS
Mewtwo	Psychic	ConfusionPsystrikeLegacy	23.8
Blacephalon	FireGhost	AstonishShadow Ball	22.3
Alakazam	Psychic	ConfusionPsychicLegacy	20.3
Hoopa	PsychicGhost	ConfusionShadow Ball	20.2
Darkrai	Dark	SnarlShadow Ball	20.1
Chandelure	GhostFire	HexShadow Ball	19.9
Gengar	GhostPoison	LickShadow BallLegacy	19.9
Lunala	PsychicGhost	ConfusionShadow Ball	19.8
Groudon	Ground	Mud ShotPrecipice BladesLegacy	19.8
Azelf	Psychic	ConfusionFuturesight	19.7
Espeon	Psychic	ConfusionPsychic	19.6
Absol	Dark	SnarlBrutal SwingLegacy	19.5

Windy boosts the Psychic attacks above. Fog and Overcast boost Pecharunt.

Level 40, 15 attack IV, costed against Pecharunt's own defense and typing, one per evolution family.

Pecharunt's moveset, CP and shiny All counters Raid board

Questions people ask

What is Pecharunt weak to in Pokémon GO?

Pecharunt takes 1.6 times from Ground, Ghost, Psychic and Dark.

What's the best counter to Pecharunt?

Mewtwo with Confusion and Psystrike, worth 23.8 damage per second against Pecharunt's own defense. The full ranking is above.