Weak toFlyingPoisonBugFireIce ×1.6

Attacker	Type	Moveset	DPS
Blacephalon	FireGhost	IncinerateMind BlownLegacy	81.8
Eternatus	PoisonDragon	Poison JabDynamax CannonLegacy	69.9
Reshiram	DragonFire	Fire FangFusion FlareLegacy	67.9
Pheromosa	BugFighting	Bug BiteBug Buzz	63.6
Salamence	DragonFlying	Fire FangFly	62.6
Chandelure	GhostFire	Fire SpinOverheat	62.1
Moltres	FireFlying	Fire SpinFly	61.6
Cinderace	Fire	Fire SpinPyroball	61.3
Enamorus	FairyFlying	Fairy WindFly	61.0
Volcarona	BugFire	Fire SpinOverheat	60.6
Darmanitan	Fire	Fire FangOverheat	60.4
Yveltal	DarkFlying	GustOblivion WingLegacy	60.2

Clear boosts the Fire attacks above. Clear boosts Cacnea.

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

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

Questions people ask

What is Cacnea weak to in Pokémon GO?

Cacnea takes 1.6 times from Flying, Poison, Bug, Fire and Ice.

What's the best counter to Cacnea?

Blacephalon with Incinerate and Mind Blown, worth 81.8 damage per second against Cacnea's own defense. The full ranking is above.