Barometric Pressure in Altadena, United States 
0000 hPa
00.0 ℃
00.0%
00.0 m/s
Get Alerts 🚨. Sign up to receive alerts when the barometric pressure changes significantly.
Forecast
Hourly Pressure Trends
Track the barometric pressure in Altadena hour by hour and stay informed about how it will change over the next 6 hours.
Upcoming Days
Stay informed about the barometric pressure trends in Altadena for the upcoming days, including daily minimum and maximum readings.
Altadena has mild, sunny weather year-round. Air pressure is usually high due to its location near the Pacific Ocean and mountains.
The San Gabriel Mountains to the east make a rain shadow effect, keeping air pressure relatively stable.
In summer, high pressure brings clear skies and warm temperatures. In winter, low-pressure systems bring cooler temperatures and some rain.
Altadena has a Mediterranean climate with low humidity. This climate type means high air pressure dominates, resulting in clear skies and mild temperatures.