As a water droplet falls through a relatively dry atmosphere, its size will:

When a water droplet falls through a relatively dry atmosphere, it will generally get smaller as it descends. This occurs because the surrounding drier air can absorb water vapor from the droplet, leading to evaporation. As the droplet loses moisture, it decreases in size.

Additionally, the dynamics of air currents and the potential for evaporation in a low-humidity environment contribute to the reduction in size of the droplet. In contrast, if the atmosphere were humid, droplets would be more likely to maintain or increase in size due to the absorption of moisture rather than losing it. Overall, the characteristics of the surrounding environment play a significant role in determining how the size of the droplet changes during its descent.