These current conditions and the related content/links on this page are not a substitution for the official weather briefing from the FAA. Local weather by ZIP or City Local area snow depth CURRENT WEATHER MAPS Fronts & Pressure Centers Current U.S. Air pressure is the weight of air pressing down on the oceans, land and surface of the earth and is measured with a barometer. Low: 25 °F. Barometric pressure is the measure of air pressure in a given area. The chart curve represents the rate of change over this allotted time period. It shows: - Your local pressure - The pressure reduced to the mean sea level (the value that every weather forecast service use) - The pressure got from the nearest airport - Latest 24 hours pressure chart Excellent for fishing or if you are simply interested in weather trend. The lowest barometric pressure reading has been 30.13 inHg at 12:56 AM, while the highest recorded barometric pressure is 30.21 inHg at 7:56 AM. Storms are associated with low air pressure. Surface Pressure and Precipitation (GFS 10‑day Forecast) Local Weather. A barometer is an instrument used to measure atmospheric pressure. Pressure tendency can forecast short term changes in the weather. Updated April 24, 2017. Monday. 2 Day Barometric Presssure It can measure the pressure exerted by the atmosphere by using water, air, or mercury. 7 Day Barometric Pressure. Here you have an accurate barometer with an elegant analogical dial. A Barometric Pressure History Chart is a graph, shown on many AcuRite weather station products, that tracks and displays the historical barometric pressure over a the selected time period. Please contact the FAA for more information on pilot briefings or call 1-800-WX-BRIEF (800-992-7433). Extended Forecast for Reading PA Overnight. An example of a 12-hour barometric pressure history chart is pictured on the right. Barometer: 29.88 in (1012.7 mb) Dewpoint: 19°F (-7°C) Visibility: 10.00 mi: Wind Chill: 23°F (-5°C) Last update: 7 Dec 1:54 am EST : More Information: Local Forecast Office More Local Wx 3 Day History Mobile Weather Hourly Weather Forecast. Chart and data: Station Pressure - Hourly data (24 hours) for Toronto for Toronto, Ontario, Canada By David Green. Barometric Pressure Reports (inHg) Report for Year 2020 Data last updated 12/8/2020 08:55 AM. 48 hour barometric pressure. What is a barometer? Temperatures Northwest U.S. Northeast U.S. Mid-Atlantic U.S. Midwest U.S. Central Plains U.S. Southeast U.S. Southern Plains U.S. Southwest U.S. Alaska Nampa barometric pressure today from 12:56 AM on Tue, Nov 24th 2020 until 7:56 AM. Barometer (HPA) Previous 24 hours. Barometric Pressure Reports (inHg) Report for Year 2020 Data last updated 12/7/2020 5:10 PM. 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