Business Aviation Weather: International Standard Atmosphere – How It Affects Flight
Universal Weather
JULY 31, 2025
Knowing how ISA works and how deviations from standard conditions impact performance is critical to safe and efficient flight planning, especially at high altitudes or in hot conditions. psi Temperature: 15°C (59°F) As altitude increases, both temperature and pressure decrease in a predictable way—known as the lapse rate.
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