AirTags feature the same IP67 ingress protection rating as the iPhone X. This implies that AirTags are completely dust-proof and water-resistant when submerged in water for up to one meter for up to thirty minutes (IEC standard 60529)
AirTags are water-resistant rather than waterproof. AirTags should not be submerged in liquid or exposed to a constant stream of water from a hose or faucet.
This is not to say that AirTags will stop operating as soon as they are exposed to the elements. If you spill something on your AirTags or get caught in the rain, your AirTags should still function normally.
In theory, you could submerge your AirTag in a puddle or a glass of water and it would likely survive for several minutes. However, I would advise against using this as a party trick. Water resistance might deteriorate over time, and Apple does not provide coverage for liquid damage.
How To Dry Out Your AirTags
Don't worry if your AirTag gets wet! You have a few options for drying it off. We do not advise blowing on your AirTag or using compressed air to dry it out. This can cause additional harm to the AirTag by pushing the water deeper into its components.
The first step is to remove any wetness from the AirTag's exterior. While doing this, try to keep the AirTag reasonably motionless. If you move it too much, water droplets may enter the inside and harm the battery.
Open the AirTag once you've dried the exterior. Place the AirTag, battery cover, and battery on a flat surface. If you have any desiccants, such as Silica packets, you should place them under your AirTag components to speed up the drying process. Desiccants are frequently found in shoeboxes and cargo containers. You may also use rice.
Allow at least 8 hours for the AirTag to air dry completely. It might take up to 24 hours depending on the relative humidity in the room.