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The pressure in Alton, United States is predicted to slowly drop over the next few hours, with an average pressure of 1029.7 hPa today, which is higher than normal.
Weather prediction: Expect more wet and unsettled conditions
The daily total fluctuation in pressure in Alton is 5.5 hPa, with a low of 1026.8 hPa and a high of 1032.3 hPa. The daily average here is higher than in most cities around the world.
Barometric pressure in Alton, New Hampshire averages around 30.12 inches. This is slightly above the national average. Pressure is usually highest in winter.
Alton is located in a valley surrounded by mountains. The White Mountains are to the north. The Lakes Region is to the south. Mountains surround the city on all sides except east.