Barometric Pressure in Costa Mesa, United States 
1010.1 hPa
25.9 ℃
69%
3.35 m/s
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The average pressure in Costa Mesa, California, United States today is , which is considered normal. Pressure is trending falling.
Weather prediction: Rain at frequent intervals
Rapid Pressure Changes
Rapid pressure changes detected in Costa Mesa, often a sign of approaching weather shifts. See the forecast chart or get pressure alerts.
- Rapid Fall : ()
- Rapid Rise : ()
The daily total fluctuation in pressure in Costa Mesa is , with a low of and a high of .
Forecast
Hourly Pressure Trends
Track the barometric pressure in Costa Mesa hour by hour across the next 6 hourly readings.
The barometric pressure in Costa Mesa is influenced by its coastal location. The pressure is higher during the day and lower at night. This variation is due to the city's proximity to the Pacific Ocean.
The city is surrounded by hills to the north and east. These hills block cold air from flowing into the city. The Santa Ana Mountains are located about 20 miles east of Costa Mesa. The mountains also play a role in shaping the local weather patterns.
The coastal landscape allows for a gentle influx of marine air. This air brings moisture and cools the city. The surrounding hills and mountains force the air to rise, resulting in a slight increase in pressure. This unique combination creates a microclimate in Costa Mesa.