The Weather Institute is a building in the Third Generation of Pokémon video games (Pokémon Sapphire, Ruby and Emerald). At first, when the player first enters the Weather Institute building, the place is being invaded by Team Magma / Team Aqua. Once the player defeats all Team Magma / Team Aqua personnel, the Weather Institute donate the Pokémon Castform, at Level 25, to the player. There is also a bed in the Weather Institute building, allowing the player's Pokémon party to rest, and be healed in the same way as a Pokémon Center trip. The Weather Institute building is located in the middle of Mauville City and Fortree City.
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