One of Pokemon GO's many, many mysteries is Pokemon spawn rates. What's the chance that a Bulbasaur will appear in yonder bushes? How often will I encounter Mr Mime? (Spoiler: .0031 per cent of the time). Pokemon GO Indigo League, Episode 1
This morning, Pokemon GO Hub published a Pokemon GO spawn rate chart using over 100 million data points from Poke Radar's "prediction algorithm dataset". In his words, it is "highly accurate". Because Pokemon spawn rates fluctuate depending on where you live, this dataset doesn't necessarily reflect your specific location's Pokemon-spawning frequency. But looking at the overall averages is super interesting.
Out of every 1000 Pokemon encountered, one will be a Kabuto. Peak Growlithe strikes at 3:57AM. Psyduck's spawn rate is 2.54 per cent, although I hear he's extremely common some places and quite rare in others.
The chart measures (in order) Pokemons' spawn chance, average spawns per 10,000 Pokemon and most active spawn times.
Pidgey is more common than Rattata
After the non-existent "legendary" Pokemon, Dragonite is the least common
The next-least-common Pokemon are...
Gyarados has the same spawn rate as Kabutops
Male Nidorans are less common than female Nidorans
And, out of every 10,000 Pokemon, there will be 21 Pikachus
Use this information as you wish! Go forth and... play your buggy game.