CAA Drone Theory Practice Test 2025 - Free Drone Theory Practice Questions and Study Guide

Question: 1 / 400

Which weather condition is MOST likely to affect drone visibility during flight?

Light rain

Fog

Fog is the weather condition that is most likely to affect drone visibility during flight because it consists of tiny water droplets suspended in the air, significantly reducing the distance a pilot can see. When flying a drone, visual line of sight is crucial for safe operation, and dense fog can obscure not only the drone itself but also any obstacles or other aircraft in the vicinity.

While light rain can reduce visibility, its effect is often less severe than that of fog. Cloudy skies generally do not impede visibility to the same extent, as clouds typically have higher altitudes, allowing for ample ground visibility. Sunny weather usually provides the best visibility conditions for drone operation, with no obscured view, making fog the most impactful on visibility in comparison.

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Cloudy skies

Sunny weather

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