Approximate atmospheric pressure at Calgary's altitude?

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Multiple Choice

Approximate atmospheric pressure at Calgary's altitude?

Air pressure falls as you climb, so higher altitudes have lower pressure than sea level. Sea level is about 14.7 psi. Calgary sits around 1,000 meters up, where the standard atmosphere gives roughly 89.9 kPa, which converts to about 13 psi. So the best approximation for Calgary’s altitude is about 13 psi. The other numbers are far from typical near-surface values: 28 psi would be higher than sea level, 1 psi is far too low for air at the surface, and 50 psi is far too high for that altitude.

Air pressure falls as you climb, so higher altitudes have lower pressure than sea level. Sea level is about 14.7 psi. Calgary sits around 1,000 meters up, where the standard atmosphere gives roughly 89.9 kPa, which converts to about 13 psi. So the best approximation for Calgary’s altitude is about 13 psi. The other numbers are far from typical near-surface values: 28 psi would be higher than sea level, 1 psi is far too low for air at the surface, and 50 psi is far too high for that altitude.

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