Weak toBugGhostWaterGrassIceDark ×1.6

Attacker	Type	Moveset	DPS
Kartana	GrassSteel	Fury CutterLeaf Blade	42.9
Blacephalon	FireGhost	AstonishShadow Ball	42.2
Pheromosa	BugFighting	Bug BiteBug Buzz	40.8
Inteleon	Water	Water GunHydro CannonLegacy	38.3
Chien-Pao	DarkIce	SnarlBlizzard	38.3
Kyogre	Water	WaterfallOrigin PulseLegacy	38.1
Darkrai	Dark	SnarlShadow Ball	38.0
Chandelure	GhostFire	HexShadow Ball	37.7
Gengar	GhostPoison	LickShadow BallLegacy	37.7
Absol	Dark	SnarlBrutal SwingLegacy	36.9
Roserade	GrassPoison	Magical LeafLeaf Storm	36.2
Kingler	Water	BubbleCrabhammer	36.2

Rainy boosts the Bug attacks above. Clear and Windy boost Baltoy.

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

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

Questions people ask

What is Baltoy weak to in Pokémon GO?

Baltoy takes 1.6 times from Bug, Ghost, Water, Grass, Ice and Dark.

What's the best counter to Baltoy?

Kartana with Fury Cutter and Leaf Blade, worth 42.9 damage per second against Baltoy's own defense. The full ranking is above.