These abilities change the weather, or limit the effectiveness of weather changes.
Air Lock[]
Changes in the weather (either natural or induced by the moves Rain Dance, Sunny Day, Hail or Sandstorm) do not affect this Pokémon. Any of the weather-changing attacks attempted while this Pokémon is in battle will fail. The abilities Chlorophyll and Swift Swim will not work while this Pokémon is in battle. Has the same effect as the ability Cloud Nine.
Cloud Nine[]
Effects of the weather (either natural or induced by the moves Rain Dance, Sunny Day, Hail or Sandstorm) do not affect this Pokémon. Any of the weather-changing attacks attempted while this Pokémon is in battle will fail. The abilities Chlorophyll and Swift Swim will not work while this Pokémon is in battle. Compare to Air Lock.
Drizzle[]
When the Pokémon enters battle, it will begin to rain, as if the move Rain Dance has been used. Compare to Drought, Sand Stream, and Snow Warning. The rain will last until the weather is changed by a move or ability.
Drought[]
When the Pokémon enters battle, the sunlight becomes harsh, as if the move Sunny Day has been used. Compare to Drizzle, Sand Stream, and Snow Warning. The sunlight will last until the weather is changed by a move or ability.
Sand Stream[]
When the Pokémon enters battle, a Sandstorm will brew, as if the move Sandstorm has been used. Compare to Drizzle, Drought, and Snow Warning. The sandstorm will last until the weather is changed by a move or ability.
Snow Warning[]
When the Pokémon enters battle, it will begin to hail, as if the move Hail has been used. Compare to Drizzle, Drought, and Sand Stream. The hail will last until the weather is changed by a move or ability.
Pokémon with these abilities[]
| Pokémon Name | Type 1 | Type 2 | Ability | Comments |
| Abomasnow | Ice | Grass | Snow Warning | Keeps its old ability when evolves from Snover |
| Golduck | Water | Cloud Nine | Keeps its old ability when evolves from Psyduck | |
| Hippopotas | Ground | Sand Stream | ||
| Hippowdon | Ground | Sand Stream | Keeps its old ability when evolves from Hippopotas | |
| Groudon | Ground | Drought | This Pokémon is legendary exactly because of this ability. | |
| Kyogre | Water | Drizzle | This Pokémon is legendary exactly because of this ability. | |
| Psyduck | Water | Cloud Nine | May have Damp instead | |
| Rayquaza | Dragon | Flying | Air Lock | This ability is what classifies Rayquaza as a legendary Pokémon and the bringer of balance between Groudon and Kyogre in Pokémon Emerald |
| Snover | Ice | Grass | Snow Warning | |
| Tyranitar | Rock | Dark | Sand Stream |