55highest level
Gym Leader Winona (rematch 4) fields 6 Pokémon between level 48 and level 55 in Fortree City Gym.
This is around Beat Norman — Petalburg City Gym, badge 5 in the story — that page lists everything you can have caught by this point.
Types on this team: Flying ×4Dragon ×3GrassPsychicSteelWater
| Pokémon | Ability & item | Moves | Base stats | |
|---|---|---|---|---|
 | Noctowl Lv 48 PsychicFlying | Also has Nocturnal, Keen Eye, Majestic Bird — innates are always active · Picks one of Tinted Lens, Shallow Diver, Forewarn | Hypnosis Psychic Reflect Dream Eater | HP100Attack50Defense50Sp. Atk86Sp. Def96Speed70Total452 |
 | Tropius Lv 49 GrassDragon | Also has Big Leaves, Chlorophyll, Levitate — innates are always active · Picks one of Solar Power, Harvest | Sunny Day Aerial Ace SolarBeam Earthquake | HP99Attack68Defense83Sp. Atk72Sp. Def87Speed51Total460 |
 | Dragonair Lv 50 Dragon | Held item Sitrus Berry Also has Marvel Scale — innates are always active · Picks one of Shed Skin, Elementist, Dragonize | Thunder Wave Thunderbolt Protect Ice Beam | HP61Attack84Defense65Sp. Atk70Sp. Def70Speed70Total420 |
 | Pelipper Lv 51 WaterFlying | Also has Keen Eye, Rain Dish — innates are always active · Picks one of Drizzle | Surf Supersonic Protect Aerial Ace | HP60Attack50Defense100Sp. Atk95Sp. Def70Speed65Total440 |
 | Skarmory Lv 53 SteelFlying | Also has Keen Eye, Giant Wings — innates are always active · Picks one of Heavy Metal, Sturdy, Weak Armor | Whirlwind Spikes Steel Wing Aerial Ace | HP65Attack80Defense140Sp. Atk40Sp. Def70Speed70Total465 |
 | Altaria Lv 55 DragonFlying | Held item Chesto Berry Also has Cloud Nine, Fluffy — innates are always active · Picks one of Natural Cure, Cute Charm, Serene Grace | Aerial Ace Rest Dragon Dance Earthquake | HP75Attack70Defense90Sp. Atk70Sp. Def105Speed80Total490 |
How to beat this team
Shared weaknesses. Ice hits 4 of 6, Dragon hits 3 of 6, Electric hits 3 of 6, Fairy hits 3 of 6.
Level to be ready for. Lv 55 — Altaria, the highest on the team.
Ice Pokémon you can have caught by this point. From this guide’s own encounter tables, by Beat Norman — Petalburg City Gym, badge 5: