Does "100% Humidity" Mean Air Has Turned to Water?

The video tutorial explains the concept of humidity, a key aspect of weather patterns, and its types: absolute, relative, and specific humidity. Humidity is the measure of water vapor in the air, affecting how temperatures feel. Absolute humidity is the total mass of water vapor in air, while specific humidity is the ratio of water vapor to moist air mass. Relative humidity, often expressed in percentages, indicates how much water vapor the air holds relative to its capacity. The tutorial clarifies misconceptions about 100% humidity, using analogies like a sponge and fog to illustrate the concept.

What does a relative humidity of 100% indicate about the air?

Why is fog considered an indicator of 100% humidity?