Barometric Pressure in Ottawa, Canada 
0000 hPa
00.0 ℃
00.0 m/s
00.0%
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The pressure in Ottawa, Ontario, Canada is predicted to rapidly rise over the next few hours, with an average pressure of 1005.3 hPa today, which is lower than normal.
Weather prediction: Expect shortly fair weather and gale or storm winds
The daily total fluctuation in pressure in Ottawa is 21.3 hPa, with a low of 995.3 hPa and a high of 1016.6 hPa.
Forecast
Hourly Pressure Trends
Track the barometric pressure in Ottawa hour by hour and stay informed about how it will change over the next 6 hours.
Barometric pressure in Ottawa varies throughout the year, influenced by the movement of high and low-pressure systems. It can drop significantly during storms, causing windy conditions. During fair weather, pressure rises, leading to calm and settled conditions.
Ottawa is situated in the Ottawa Valley, where the Ottawa River flows. The surrounding landscape is a mix of flat plains and gentle hills. To the north and west, the terrain rises, forming a plateau. This unique geography affects the flow of air masses, which in turn influences the barometric pressure in the region.
The plateau to the north and west of Ottawa creates a rain shadow effect, blocking moisture-laden air from the Gulf of St. Lawrence. This leads to drier air masses moving into the region, causing pressure to rise. Conversely, when air masses from the Atlantic Ocean move in, they are forced to rise, resulting in lower pressure and precipitation.