Question

when we said that air is dry or humid?​

Answer 1

when there is less water vapour in air we say its dry when there is more we say its humid

Answer 2

Explanation:

When temperatures climb into the 90s with high humidity levels (dew points in the 70s) you’re likely to hear someone say something like: “The air is really heavy today.” Or, maybe, given today’s delightfully low humidity, you might think the air seems particularly light.

In very hot, humid weather you might feel the air is heavier because moving around seems to take more energy than on dry days. Sticky days probably feel “heavier” because heat and high humidity slows the evaporation of perspiration, your body grows hotter and this saps your strength.