Weak toBugGhostDark ×1.6

Attacker	Type	Moveset	DPS
Blacephalon	FireGhost	AstonishShadow Ball	45.5
Pheromosa	BugFighting	Bug BiteBug Buzz	43.9
Darkrai	Dark	SnarlShadow Ball	41.0
Chandelure	GhostFire	HexShadow Ball	40.6
Gengar	GhostPoison	LickShadow BallLegacy	40.6
Absol	Dark	SnarlBrutal SwingLegacy	39.8
Eternatus	PoisonDragon	Poison JabDynamax CannonLegacy	38.8
Dragapult	DragonGhost	AstonishShadow Ball	38.8
Hoopa	PsychicGhost	AstonishShadow Ball	38.1
Lunala	PsychicGhost	Shadow ClawShadow Ball	38.0
Gholdengo	SteelGhost	HexShadow Ball	38.0
Zoroark	Dark	SnarlFoul Play	37.9

Fog boosts the Ghost attacks above. Windy boosts Espurr.

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

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

Questions people ask

What is Espurr weak to in Pokémon GO?

Espurr takes 1.6 times from Bug, Ghost and Dark.

What's the best counter to Espurr?

Blacephalon with Astonish and Shadow Ball, worth 45.5 damage per second against Espurr's own defense. The full ranking is above.