Weak toFlyingFirePsychicIce ×1.6

Attacker	Type	Moveset	DPS
Blacephalon	FireGhost	IncinerateMind BlownLegacy	57.3
Mewtwo	Psychic	ConfusionPsystrikeLegacy	49.4
Reshiram	DragonFire	Fire FangFusion FlareLegacy	47.6
Salamence	DragonFlying	Fire FangFly	43.9
Chandelure	GhostFire	Fire SpinOverheat	43.6
Moltres	FireFlying	Fire SpinFly	43.2
Cinderace	Fire	Fire SpinPyroball	43.0
Volcarona	BugFire	Fire SpinOverheat	42.5
Darmanitan	Fire	Fire FangOverheat	42.3
Yveltal	DarkFlying	GustOblivion WingLegacy	42.2
Alakazam	Psychic	ConfusionPsychicLegacy	42.1
Toucannon	NormalFlying	PeckBeak BlastLegacy	41.8

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

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

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

Questions people ask

What is Oddish weak to in Pokémon GO?

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

What's the best counter to Oddish?

Blacephalon with Incinerate and Mind Blown, worth 57.3 damage per second against Oddish's own defense. The full ranking is above.