Barometric Pressure in Azusa, United States 
1009.1 hPa
39.2 ℃
16%
0.86 m/s
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The average pressure in Azusa, California, United States today is , which is lower than normal. Pressure is trending falling.
Weather prediction: Rain at frequent intervals
The daily total fluctuation in pressure in Azusa is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Azusa hour by hour across the next 6 hourly readings.
The barometric pressure in Azusa varies throughout the year. It changes with the weather patterns. High pressure brings clear skies and fair weather. Low pressure brings clouds and precipitation.
Azusa is surrounded by mountains to the north and east. The San Gabriel Mountains rise steeply from the city. The landscape affects the atmospheric pressure. The mountains block or redirect air masses moving into the area. This influences the pressure and the resulting weather.
The surrounding mountains also create a rain shadow effect. Moist air is forced to rise and cool, resulting in precipitation. The air then descends into Azusa, dry and warm. This contributes to the city's dry climate.