The range of normal residential water pressure is from 30 to 80 psi. Ideally, the pressure should be set between 45 and 60 pounds in most residential plumbing systems.If the pressure rises too high...
"look at the little thermometer" Whoever posted that answer should be blocked from answering questions. A thermometer measures temperature, not pressure. Most hardware stores will have water pressure...
you can improve water pressure by installing a booster pump or if on a well then turn up your set pressure. If you had good pressure before and now are having poor pressure then it could be many...