There are different levels of the atmosphere and this explains what meteorologists look at at the surface.
Meteorologists and weather forecasters use the upper levels of the atmosphere to help predict the weather and make a better forecast. One level is at 850 mb.
Forecasters and meteorologists look at the upper atmosphere to determine a forecast. At 700 mb, omega is graphed or the vertical motion.
A 500 mb pressure map is what meteorologists look at to predict a forecast. This is the middle of the atmosphere and height levels are plotted and vorticity is determined.