Barometric Pressure in Altoona, United States 
1012.3 hPa
17.9 ℃
85%
1.75 m/s
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The average pressure in Altoona, Pennsylvania, United States today is , which is considered normal. Pressure is trending rising.
Weather prediction: Fine, possible showers
Rapid Pressure Changes
Rapid pressure changes detected in Altoona, often a sign of approaching weather shifts. See the forecast chart or get pressure alerts.
- Rapid Rise : ()
- Rapid Rise : ()
The daily total fluctuation in pressure in Altoona is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Altoona hour by hour across the next 6 hourly readings.
Weather patterns in Altoona cause the air pressure to rise and fall, which can make the weather change quickly. Rising pressure usually means fair weather, while falling pressure means stormy weather.
Altoona's high elevation and mountainous landscape make the air pressure change often. The surrounding mountains can trap air, causing pressure to rise or fall suddenly.
In the winter, pressure is usually low, bringing cold air and snow. In the summer, pressure is high, bringing warm air and sunshine. In the spring and fall, pressure changes often, causing mixed weather.
Altoona has a humid continental climate, which means the air pressure can change quickly, making the weather unpredictable and sometimes extreme.