Weak toFightingBugFairy ×1.6

Attacker	Type	Moveset	DPS
Lucario	FightingSteel	Force PalmAura SphereLegacy	70.1
Pheromosa	BugFighting	Bug BiteFocus Blast	68.2
Kartana	GrassSteel	Fury CutterSacred Sword	66.7
Terrakion	RockFighting	Double KickSacred SwordLegacy	63.9
Blaziken	FireFighting	CounterAura Sphere	63.4
Enamorus	FairyFlying	Fairy WindDazzling Gleam	59.2
Conkeldurr	Fighting	Force PalmFocus Blast	58.5
Keldeo	WaterFighting	Low KickSacred Sword	57.9
Breloom	GrassFighting	Force PalmDynamic Punch	57.7
Urshifu	Fighting	CounterDynamic Punch	57.3
Eternatus	PoisonDragon	Poison JabDynamax CannonLegacy	56.9
Marshadow	FightingGhost	CounterClose Combat	56.0

Overcast boosts the Fighting attacks above. Fog boosts Purrloin.

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

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

Questions people ask

What is Purrloin weak to in Pokémon GO?

Purrloin takes 1.6 times from Fighting, Bug and Fairy.

What's the best counter to Purrloin?

Lucario with Force Palm and Aura Sphere, worth 70.1 damage per second against Purrloin's own defense. The full ranking is above.