Why is it crucial for jumpers to check clouds before a jump?

Checking clouds before a jump is essential primarily to prevent collisions during descent. Clouds can obscure visibility, making it challenging for jumpers to see other skydivers, aircraft, or obstacles on the ground. If jumpers cannot see or be seen, the risk of mid-air collisions significantly increases, which can jeopardize safety for all involved.

While factors such as designated landing areas and compliance with altitude regulations are important considerations, the immediate concern during a jump is the safe navigation of the airspace around the jumper. Visibility plays a critical role in ensuring skydivers can assess their surroundings and make informed decisions during their descent. Additionally, equipment safety, while always a priority, is not directly related to cloud cover, making the prevention of collisions the most pertinent reason for checking clouds before jumping.