While wind speed and air pressure may seem to be unrelated qualities of air, they are in fact one and the same property for all fluids, including air and water.

Wind is air pressure converted to the movement of air, when wind stops it becomes air pressure. This means that higher wind speeds will show lower air pressure. It is also the reason why tornadoes suck debris up their funnel and why airplanes have to be moving fast to fly. Since wind speed will effect air pressure measurements, it is important to place pressure sensors in windless places unless the pressure sensor is near an anemometer or built into it and its readings are compensated for wind speed effects on air pressure.

Second important fact to know about air pressure observations is that the air pressure reported in weather reports and weather forecasts is not the air pressure measured by a weather station, unless the weather station is located at sea level. So that meteorologists can properly compare air pressure readings from weather fronts, they must standardize the readings by converting the local measured pressure (also known as barometric, gauge pressure) to sea-level equivalent air pressure. Once standardized, they can then compare, which weather front has higher or lower atmospheric pressure and can base weather forecast on the observed weather station data.