Barometric Pressure in Hornsby, Australia 
1007.7 hPa
29.8 ℃
43%
5.68 m/s
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The average pressure in Hornsby, New South Wales, Australia today is , which is lower than normal. Pressure is trending rising.
Weather prediction: Fine, possible showers
Rapid Pressure Changes
Rapid pressure changes detected in Hornsby, often a sign of approaching weather shifts. See the forecast chart or get pressure alerts.
- Rapid Rise : ()
The daily total fluctuation in pressure in Hornsby is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Hornsby hour by hour across the next 6 hourly readings.
Hornsby's air pressure changes with weather patterns. High pressure brings clear skies and low pressure brings rain.
Hornsby's geography affects air pressure. The area is surrounded by hills and mountains which block or redirect winds.
In summer, air pressure drops, bringing thunderstorms. In winter, high pressure dominates, making it cooler and clearer.
Hornsby has a subtropical climate. This climate type means air pressure changes are moderate, with no extreme highs or lows.