What is the standard temperature at sea level according to the US Standard Atmosphere?

The standard temperature at sea level according to the US Standard Atmosphere is 15°C. This temperature is consistent with the definition of standard atmospheric conditions, which provide a baseline for various calculations in fields such as aviation, meteorology, and aerospace engineering. The standard atmospheric pressure is also defined as 760 mmHg, which together with the 15°C temperature allows for a clear framework to analyze the earth's atmosphere at sea level.

This standardization is critical as it provides a uniform reference point for scientists and engineers when designing aircraft and researching atmospheric conditions. Knowing this standard helps in assessing the performance of aircraft engines, calculating air density, and making more accurate flight path predictions. Temperature variations from this standard can lead to different assumptions and calculations in aerospace physiology, so understanding the standard is essential for accurate assessments and analyses in this field.