Windblight Ganon is an agile, flying boss that uses a cannon and creates whirlwinds. Phase 1: It will fly around, shooting projectiles and creating small tornadoes. Use Revali's aerial attacks or Link's bow to hit it while it's airborne. When it creates a large whirlwind, use Magnesis (L + B) on any metallic objects it throws to send them back, stunning it and exposing its weak-point gauge.
Phase 2: It will become more aggressive, firing multiple projectiles and creating larger, more damaging whirlwinds. Keep moving and dodging. Stasis can be used to freeze it mid-air for a short period. Characters with good ranged options are crucial here. Urbosa's lightning can also be effective if you can get close. Rewards include Blight Ganon parts and high-tier weapons.