What causes pressure altitude to change? Atmospheric pressure changes as a result of changes in air density, and air density is primarily affected by temperature.

This pressure changes with altitude, weather systems, and temperature shifts. On clear days, barometric pressure tends to be higher, while it drops before storms or during rainy weather.

Besides a pressure change, with increasing altitude you also get decreasing vapor pressure and temperature. But that's not always a given since the high desert gets plenty warm in the summertime.

The conditions outside a cruising airliner are those of intense cold, thin air, and potentially lethal atmospheric conditions ...

Barometric pressure is the amount of pressure the air is pushing onto your body. Changes in barometric pressure can cause headaches or pain.

NASA's high-altitude balloons are hitting the stratosphere to study dark matter for a fraction of the cost of space telescopes.

Many factors can cause pressure to build up in the ears. Outside the body, air pressure may change with altitude changes, while depth changes alter hydrostatic pressure in water.

Some people experience high-altitude headaches due to changes in barometric pressure, such as during plane travel. Others, who experience migraine headaches or tension-type headaches, find that ...

In between these low-pressure and high-pressure systems is a strong change in pressure over a distance—a pressure gradient. And that pressure gradient leads to strong winds.

This is also true for a change in altitude, where atmospheric pressure drops the higher you climb, causing the pressure in your car's tires to go up ever so slightly.