Hostile Mobs have been spawned at all Light Levels lower than 7. However, this has changed in Minecraft 1.18 Caves and Cliffs Part 2 updates. It’s gone days when you had to spam torches in order to protect your farms, islands, and buildings. Let’s take a look at the Light Levels that hostile Mobs spawn at in Minecraft.
Natural Generation
Hostile mobs can only naturally spawn at a light level of 0. You will not have any hostile mobs spawn within the torch’s range. This allows players to place torches and other light sources more frequently.
Related: All mountain biomes in Minecraft
Mob Spawners
Mob Spawners will now need a Light level of 11 or less to work. To deactivate them, the player must set a minimum light level of 12. To accomplish this, place torches around or on the spawner. A standard torch emits a light level around 14 watts.
For more Minecraft content, check out Best Minecraft mountain seedsCheaterboss.net