United States
Barometric Pressure in Tustin, CA
Tustin is in California, United States. These forecasts use the saved city coordinates; nearby weather model grid points and their elevations may differ.
- Coordinates: 33.7458, -117.8262
- Timezone: America/Los_Angeles
- Approximate terrain elevation: 43 m
Current pressure
—hPa
- Surface pressure
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- Change over three hours
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Pressure trend and forecast
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Yesterday through the seven-day forecast. Drag across the chart to explore hourly pressure; release to return to now.
Predicted Rapid Changes
Daily Forecast
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Normal barometric pressure in Tustin
Tustin is close to sea level (about 43 m), so a barometer or phone sensor there typically reads around 1,008 hPa (29.77 inHg), only about 5 hPa below the sea-level figures in weather reports.
| Reference | hPa | inHg | mmHg |
|---|---|---|---|
| Standard sea-level pressure (used in weather reports) | 1,013.25 | 29.92 | 760 |
| Typical surface pressure at about 43 m (standard-atmosphere estimate) | 1,008 | 29.77 | 756 |
Because the two values are close, local readings and weather reports in Tustin are easy to compare directly.
Reading the pressure
Sea-level pressure allows comparison between places at different elevations. Surface pressure represents pressure at the modelled ground elevation. A rising or falling value describes a trend; it is not a complete weather forecast.
Barometric pressure in Tustin: common questions
What is normal barometric pressure in Tustin?
For weather comparisons, normal sea-level pressure is 1,013.25 hPa (29.92 inHg, 760 mmHg). Readings above it are higher than standard and readings below it are lower. A barometer measuring local pressure at about 43 m in Tustin typically reads around 1,008 hPa (29.77 inHg).
Why does my phone show a different pressure in Tustin than the weather report?
Phone sensors and household barometers measure pressure where you are, while weather reports adjust readings to sea level so places can be compared. In Tustin, that adjustment is about 5 hPa (0.15 inHg) under standard conditions, and it grows if you are on a higher floor or hill.
Is the barometric pressure in Tustin high or low today?
When live data loads, compare the current sea-level reading above with 1,013 hPa (29.92 inHg). The three-hour change and the seven-day trend usually say more about changing weather than a single value. Normal, high, and low pressure explained.