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As Extreme Heat Scorches the U.S., Aviation Expert Explains Why Planes Struggle to Fly in High Temperatures

FOX 35 Orlando features Shem Malmquist on the science behind weather-related flight delays

Jul 30, 2025

1 min

Shem Malmquist

Record-breaking heatwaves are plaguing the U.S. this summer, making it difficult to stay cool. However, the scorching temperatures aren't just affecting us at the ground level — they're disrupting air travel, too, with increasing flight delays and aircraft weight restrictions. 


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Visiting assistant professor of aeronautics Shem Malmquist, a recognized expert in aviation safety and operations, spoke with FOX 35 Orlando about how extreme temperatures can directly impact aircraft performance, particularly at high-traffic airports during the summer.





"Temperatures are probably not something people think about," said Shem Malmquist, a graduate lecturer in aviation at Florida Tech. "But the delays just compound on each other. If you start getting delayed because people need more time to take breaks to stay cool, now that flight’s late, and that has a snowball effect."




These limitations can affect passenger loads, cargo capacity and overall flight scheduling. As temperatures continue to climb, Malmquist warned that these disruptions could become the new normal — not just a seasonal inconvenience, but a growing challenge for the aviation industry in the face of climate change.


A seasoned Boeing 777 captain and accident investigator, Malmquist has spent decades researching aircraft operations and emergency scenarios. He’s also contributed to global conversations on aviation safety policy and climate-related infrastructure resilience.


If you’re covering this topic or looking to speak with an expert on the intersection of climate and air travel, Malmquist is available for interviews. Click the icon below to connect with him.

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Shem Malmquist

Shem Malmquist

Instructor | College of Aeronautics

Shem Malmquist is an international Boeing 777 captain and experienced accident and safety investigator.

Aircraft OperationsAccident InvestigationSystem Safety EngineeringSafety Analysis

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