What does Koffing evolve into?

Multiple options from Koffing: Weezing at level 35 and Galarian Weezing at level 35. Each branch takes the 340 BST base in a different direction.

At what level does Koffing evolve?

Not a straight line. Koffing can become Weezing at level 35 and Galarian Weezing at level 35. Your choice depends on what you need.

Should I use Koffing?

For Let's Go Pikachu & Eevee, you can run Koffing through the first few routes without issues. 340 BST won't carry you far though. Get it to Weezing as fast as you can.

Where can you catch Koffing?

You can find Koffing in Let's Go Pikachu & Eevee. The Locations section has the full breakdown of routes and encounter details. It also appears in 19 other games across the series.

Koffing - Weakness, Evolution, Moveset, EVs & Stats

Utility

Balanced

DTier

35Speed · Very Slow

Stats & Training

Defense and Attack carry most of Koffing's stat budget. Speed's the obvious dump stat. Common in the wild and yields 1 Defense EV. Follows a medium-fast 1M XP curve.

Base Stats

Avg

HP40

Attack65

Defense95

Sp. Atk60

Sp. Def45

Speed35

Total340

Details

Catch Rate

Easy190 / 255

Growth Rate

Medium Fast1M XP

Height0.6 m

Weight1.0 kg

Base XP68

Abilities

Levitate

Evades ground moves.

Neutralizing Gas

Neutralizes abilities of all Pokémon in battle.

StenchHA

Has a 10% chance of making target Pokémon flinch with each hit.

Levitate grants Ground immunity

EV Yield

HPAtkDef+1SpASpDSpe

Defense training source

Pokedex Entries

In hot places, its internal gases could expand and explode without any warning. Be very careful!

Koffing Weakness

Ground and Psychic moves hit Koffing for super-effective damage. 5 resistances help offset the weaknesses. Levitate grants an additional Ground immunity, reshaping the matchup chart. Koffing's physical bulk (base 95 Def) helps cushion physical weakness hits, but special attackers are the bigger threat.

Koffing Weakness and Resistance Chart
Damage	Types
2x (Weak)	Ground, Psychic
0.5x (Resist)	Grass, Fighting, Poison, Bug, Fairy

Type ChartGood

2Weak

5Resist

1Immune

Score+1

4xCritical

None

2xWeak

Ground Psychic

½xResist

Grass Fighting Poison Bug Fairy

¼xResist

None

0xImmune

Ground

STAB (2)

Grass Fairy

How to Beat Koffing in Let's Go Pikachu & Eevee (Best Counters)

Rhydon GroundRock	C
Available Moves Moves EarthquakeLv. 54 Drill RunLv. 24 Damage vs Koffing Earthquake 2x 130-154%KO Drill Run 2x 103-123%KO View Rhydon builds →
Dugtrio Ground	C
Available Moves Moves EarthquakeLv. 35 DigLv. 18 Damage vs Koffing Earthquake 2x 103-123%KO Dig 2x 83-99% View Dugtrio builds →
Marowak Ground	C
Available Moves Moves Bone ClubLv. 12 BonemerangLv. 26 Damage vs Koffing Bone Club 2x 57-68% Bonemerang 2x 46-55% View Marowak builds →
Graveler RockGround	C
Available Move Moves EarthquakeLv. 31 Damage vs Koffing Earthquake 2x 102-120%KO View Graveler builds →
Onix RockGround	C
Available Moves Moves EarthquakeLv. 35 DigLv. 20 Damage vs Koffing Earthquake 2x 57-68% Dig 2x 46-55% View Onix builds →

Let's Go Pikachu & Eevee Evolution

One evolution ahead. Koffing grows into Weezing through a straightforward two-stage chain. A small partner pool for breeding via one egg group. Eggs are average hatch time. The evolved forms gain up to 150 total stats over Koffing. View every chain in the Evolution Chart.

How to Evolve

2 Forms

#109Koffing

Level 35

#110Weezing

Stat Comparison 2 Stages

Koffing

Poison

Weezing

Poison

65+25

ATK

90+25

DEF

120+25

SP.ATK

85+25

SP.DEF

70+25

SPE

60+25

BST

340C-Tier

490B-Tier+150

ROLE

Balanced

TYPE

Utility

Mixed

Breeding is not available in this game

Let's Go Pikachu & Eevee Koffing Best Moveset

Best Build

Let's Go Pikachu & Eevee uses different battle mechanics.

Competitive build content is not applicable for this game. Select a main series game for builds.

Moves

Level-up moves are just the starting point for Koffing. TMs unlock Normal and Dark coverage and more and turn a straightforward STAB kit around Sludge Bomb and Sludge into something with actual range.

Level-Up Moves

Lv 1

Poison Gas

D—9040Poison

Lv 1

Tackle

—4010035Normal

Lv 6

Smog

—307020Poison

Lv 12

Clear Smog

D50—15Poison

Lv 18

Sludge

D6510020Poison

Lv 24

Self-Destruct

B2001005Normal

Lv 30

Toxic

C—9010Poison

Lv 36

Haze

C——30Ice

Lv 42

Sludge Bomb

C9010010Poison

Lv 48

Explosion

B2501005Normal

TM Moves

TM20

Dark Pulse

D8010015Dark

TM12

Facade

D7010020Normal

TM46

Fire Blast

D110855Fire

TM37

Flamethrower

D9010015Fire

TM01

Headbutt

D7010015Normal

TM07

Protect+4

C——10Normal

TM05

Rest

C——10Psychic

TM42

Self-Destruct

B2001005Normal

TM43

Shadow Ball

D8010015Ghost

TM52

Sludge Bomb

C9010010Poison

TM08

Substitute

C——10Normal

TM02

Taunt

C—10020Dark

TM38

Thunder

D1107010Electric

TM36

Thunderbolt

D9010015Electric

TM27

Toxic

C—9010Poison

TM11

Will-O-Wisp

C—8515Fire

Egg Moves

Koffing doesn't have any Egg moves

Tutor Moves

Koffing can't learn any Tutor moves

Let's Go Pikachu & Eevee Koffing Locations

high spawn rates across 3 locations for Koffing in late-game routes. Scroll the sorted list below and pick whichever spot sits closest to your current route. The rate differences between locations are worth comparing.

Best Locations to Catch Koffing in Let's Go Pikachu & Eevee

3 walking spots from Lv. 37-44 for Koffing. Sorted by game progression with rates on each row, so you can compare without scrolling through everything.

Pokémon Mansion - 1F

Grass Lv.39-44 Building

40%Late

Pokémon Mansion - 2F

Grass Lv.39-44 Building

30%Late

Power Plant

Grass Lv.37-42 Power-plant

25%Late

Koffing Guide

Multiple options from Koffing: Weezing at level 35 and Galarian Weezing at level 35. Each branch takes the 340 BST base in a different direction.
Not a straight line. Koffing can become Weezing at level 35 and Galarian Weezing at level 35. Your choice depends on what you need.
For Let's Go Pikachu & Eevee, you can run Koffing through the first few routes without issues. 340 BST won't carry you far though. Get it to Weezing as fast as you can.
You can find Koffing in Let's Go Pikachu & Eevee. The Locations section has the full breakdown of routes and encounter details. It also appears in 19 other games across the series.

Game Availability

One of the original 151, Koffing has appeared in 20 games — most mainline games. From Red & Blue through the latest titles, it's rarely been left out of a regional Pokedex.

Click a game to view version-specific details

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Excadrill GroundSteel	A
Recommended Build AbilityMold Breaker ItemFocus Sash NatureJolly Moves EarthquakeSTAB Rapid Spin Iron Head Stealth Rock Damage vs Koffing Earthquake 2x 160-189%KO Rapid Spin 27-32% View Excadrill builds →
Starmie WaterPsychic	B
Recommended Build AbilityAnalytic ItemLife Orb NatureTimid Moves Rapid Spin Ice Beam Thunderbolt Hydro Pump Damage vs Koffing Rapid Spin 16-19% Ice Beam 90-106%KO Thunderbolt 90-106%KO Hydro Pump 166-195%KO View Starmie builds →
Gardevoir PsychicFairy	B
Recommended Build AbilitySynchronize ItemChoice Scarf NatureHardy Moves PsychicSTAB Shadow Ball Thunderbolt MoonblastSTAB Damage vs Koffing Psychic 2x 243-286%KO Shadow Ball 72-85% Thunderbolt 81-95% Moonblast 64-76% View Gardevoir builds →