0000 hPa
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The pressure in Fairfax, United States is predicted to slowly rise over the next few hours, with an average pressure of 1019.4 hPa today, which is considered normal.
Weather prediction: Expect more fair, dry, cool weather
The daily total fluctuation in pressure in Fairfax is 4.3 hPa, with a low of 1016.7 hPa and a high of 1021 hPa. The daily average here is higher than in most cities around the world.
Fairfax's weather pattern moves from high to low pressure and back to high again, causing changes in the air pressure.
The area's 300-foot elevation and mix of hills and valleys affect atmospheric pressure, making it change often. The nearby Blue Ridge Mountains also influence pressure patterns.
In winter, pressure is usually high, bringing cold air. In summer, pressure is lower, making it hot and humid. Spring and autumn have moderate pressure, with mild weather.
Fairfax has a humid subtropical climate, with noticeable changes in barometric pressure throughout the year, which affects the weather and how people feel.