0000 hPa
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The pressure in Alton, United States is predicted to slowly rise over the next few hours, with an average pressure of 1013.1 hPa today, which is considered normal.
Weather prediction: Expect more fair, dry, cool weather
The daily total fluctuation in pressure in Alton is 11.3 hPa, with a low of 1006.9 hPa and a high of 1018.2 hPa. The daily average here is lower 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.