While visually and functionally related, the sky is distinct from fog, which can be considered its horizontal equivalent in cases. Like with fog, the sky's color can be changed depending on the current biome.
The sky is an exclusive element of the
minecraft:overworld dimension effect.
|Java Edition pre-Classic|
|Cave game tech test||Added the sky.|
|Java Edition Classic|
|0.0.14a||Added clouds to the sky.|
|Java Edition Indev|
|20100211||Added the sun and the moon to the sky.|
|Java Edition Infdev|
|20100227-1||Added a 1536x1536 test skybox, which is completely blue.|
|?||Removed the sky testbox.|
|Java Edition Beta|
|1.8||Release||The sky now changes color during sunset. [is this the correct version?]|