Which of the following conditions leads to higher density altitude?

The correct answer is higher temperatures because as temperature increases, the air becomes less dense. Density altitude is a measure of the density of air relative to a standard atmosphere and is heavily influenced by temperature. When the temperature rises, the air expands, leading to a decrease in air density. This effectively raises the density altitude and can impact aircraft performance, particularly in terms of lift, engine performance, and overall maneuverability.

In contrast, lower humidity, higher atmospheric pressures, and lower elevations typically have the opposite effect. Lower humidity can lead to lower density altitude because dry air is denser than humid air. Higher atmospheric pressures increase air density, thereby lowering density altitude. Lastly, lower elevations also mean denser air, thus lowering density altitude further. Overall, understanding how temperature affects air density helps pilots determine performance adjustments necessary for safe flight operations.