Weak toFlyingGroundWaterPsychic ×1.6

Attacker	Type	Moveset	DPS
Mewtwo	Psychic	ConfusionPsystrikeLegacy	34.2
Enamorus	FairyFlying	Fairy WindFly	29.6
Yveltal	DarkFlying	GustOblivion WingLegacy	29.3
Alakazam	Psychic	ConfusionPsychicLegacy	29.2
Inteleon	Water	Water GunHydro CannonLegacy	29.1
Toucannon	NormalFlying	PeckBeak BlastLegacy	29.0
Kyogre	Water	WaterfallOrigin PulseLegacy	28.9
Moltres	FireFlying	Wing AttackFly	28.9
Staraptor	NormalFlying	GustFlyLegacy	28.5
Groudon	Ground	Mud ShotPrecipice BladesLegacy	28.4
Azelf	Psychic	ConfusionFuturesight	28.4
Hoopa	PsychicGhost	ConfusionPsychic	28.2

Windy boosts the Psychic attacks above. Clear and Overcast boost Mega Blaziken.

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

Mega Blaziken's moveset, stats and CP All counters Raid board

Questions people ask

What is Mega Blaziken weak to in Pokémon GO?

Mega Blaziken takes 1.6 times from Flying, Ground, Water and Psychic.

What's the best counter to Mega Blaziken?

Mewtwo with Confusion and Psystrike, worth 34.2 damage per second against Mega Blaziken's own defense. The full ranking is above.