Weak toFlyingFirePsychicIce ×1.6

Attacker	Type	Moveset	DPS
Blacephalon	FireGhost	IncinerateMind BlownLegacy	68.6
Mewtwo	Psychic	ConfusionPsystrikeLegacy	59.1
Reshiram	DragonFire	Fire FangFusion FlareLegacy	57.0
Salamence	DragonFlying	Fire FangFly	52.6
Chandelure	GhostFire	Fire SpinOverheat	52.2
Moltres	FireFlying	Fire SpinFly	51.7
Cinderace	Fire	Fire SpinPyroball	51.5
Volcarona	BugFire	Fire SpinOverheat	50.9
Darmanitan	Fire	Fire FangOverheat	50.7
Yveltal	DarkFlying	GustOblivion WingLegacy	50.6
Alakazam	Psychic	ConfusionPsychicLegacy	50.5
Toucannon	NormalFlying	PeckBeak BlastLegacy	50.1

Clear boosts the Fire attacks above. Clear and Overcast boost Foongus.

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

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

Questions people ask

What is Foongus weak to in Pokémon GO?

Foongus takes 1.6 times from Flying, Fire, Psychic and Ice.

What's the best counter to Foongus?

Blacephalon with Incinerate and Mind Blown, worth 68.6 damage per second against Foongus's own defense. The full ranking is above.