Weak toBugGhostDark ×1.6

Attacker	Type	Moveset	DPS
Blacephalon	FireGhost	AstonishShadow Ball	30.9
Pheromosa	BugFighting	Bug BiteBug Buzz	29.8
Darkrai	Dark	SnarlShadow Ball	27.8
Chandelure	GhostFire	HexShadow Ball	27.6
Gengar	GhostPoison	LickShadow BallLegacy	27.6
Absol	Dark	SnarlBrutal SwingLegacy	27.0
Eternatus	PoisonDragon	Poison JabDynamax CannonLegacy	26.4
Dragapult	DragonGhost	AstonishShadow Ball	26.3
Hoopa	PsychicGhost	AstonishShadow Ball	25.9
Lunala	PsychicGhost	Shadow ClawShadow Ball	25.8
Gholdengo	SteelGhost	HexShadow Ball	25.8
Zoroark	Dark	SnarlFoul Play	25.7

Fog boosts the Ghost attacks above. Windy boosts Espeon.

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

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

Questions people ask

What is Espeon weak to in Pokémon GO?

Espeon takes 1.6 times from Bug, Ghost and Dark.

What's the best counter to Espeon?

Blacephalon with Astonish and Shadow Ball, worth 30.9 damage per second against Espeon's own defense. The full ranking is above.