Mars
Mars has an atmosphere with low air pressure which is mostly carbon dioxide.
Mercury, because the gravity on it is to small to hold any atmosphere in the first place.
That's MARS.
I believe the planet with low air pressure and that is mostly made of CO2 is Mars.
Air travels from high to low pressure in the atmosphere during flight through the process of air movement known as wind. Wind is created by the pressure differences between high and low pressure systems, causing air to move from areas of high pressure to areas of low pressure. This movement of air helps to balance out the pressure differences in the atmosphere.
Mars has a thin atmosphere, mainly of Carbon Dioxide. Its surface pressure is around 0.7 kPa, around 0.7% of Earths surface pressure.
Nuclear Destruction of the entire planet
The atmospheric pressure on Ceres, a dwarf planet in the asteroid belt, is extremely low compared to Earth. It is estimated to be less than 0.5% of Earth's atmospheric pressure, making it almost negligible.
Air tends to flow from areas of high pressure to areas of low pressure. This movement occurs in an attempt to equalize pressure differences in the atmosphere.
Mars.
Yes, it has an atmosphere so it has air pressure.