What is the pressure of the universe?

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The pressure of the universe is not uniform and varies significantly across different regions. The average pressure in interstellar space is approximately 10e-15 bar, primarily influenced by hydrogen molecules. This variability in pressure is similar to how atmospheric pressure changes on Earth. Understanding the pressure of the universe requires considering the vast differences in density and composition across cosmic scales. Overall, the concept of a singular "pressure of the universe" is complex and context-dependent.
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What is the current pressure of the (whole) universe? Or the average pressure in the universe?
 
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This question is not clear. Even on Earth the pressure change from place to place. I ve heard that the pressure of interstellar space is about 10e-15 bar which is mainly due to hydrogen molecules.
 

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