Barometric pressure · Above normal
1025 hPa.
1025 hPa is 11.75 hPa above standard — fair-weather high pressure. Here is what the reading means, what it means rising, steady and falling, and how it converts across every scale your instruments might use.
Above normal
11.75 hPa above the 1013.25 hPa standard
what this reading means
A high-pressure system is in control. Air is sinking, and sinking air warms and dries as it descends, which suppresses the upward motion clouds require. The atmosphere is actively being held down.
Clear or mostly clear skies, light wind, and stable air. In summer this produces hot, hazy afternoons; in winter, cold nights with strong radiational cooling and the risk of frost or fog by morning.
the number is half the signal
A barometer reading on its own is a snapshot of a system in motion. Forecasters read the tendency — which direction the value has moved over the last three hours — because that is what distinguishes weather arriving from weather leaving. The same 1025 hPa carries three different forecasts.
Rising to 1025 hPa
The high is strengthening or moving closer. Fair weather locking in, with the driest, clearest air usually arriving near the pressure peak.
Steady to 1025 hPa
A settled high-pressure regime with no change in sight. These patterns can persist for several days, and stagnant air under a strong high is a common cause of haze and degraded air quality.
Falling to 1025 hPa
The high is weakening or moving off. A fall from this level is not an immediate storm signal — it is the start of a return toward ordinary, and worth watching for a continued decline.
how fast it is moving
Rate matters more than direction. Weather services report pressure tendency over a three-hour window, and these are the thresholds that change what a forecaster says:
1025 hPa in every scale
All five of these are the same pressure. US weather apps default to inches of mercury, a holdover from seventeenth-century mercury-column barometers; almost everywhere else uses hectopascals, and aviation and marine instruments often use millibars, which are numerically identical to hPa.
30.27 inHg
inches of mercury — US weather apps
1025.0 hPa
hectopascals — the international standard
1025.0 mb
millibars — numerically identical to hPa
768.8 mmHg
millimetres of mercury
102.50 kPa
kilopascals
why your altitude does not change this number
The pressure your weather app shows is sea-level adjusted — the value your station would read if it were at sea level. It has to be, or the map would be useless: real station pressure in Denver runs near 24.8 inHg simply because there is a mile less atmosphere overhead, and every mountain station would look like a permanent hurricane.
So 1025 hPa means the same thing in Denver as it does in Miami. If you own a barometer that reads noticeably lower than your weather app, it is almost certainly reporting raw station pressure and needs to be set to your elevation.
where this sits on the scale
Comfortably above the 29.92 inHg (1013.25 hPa) standard — the signature of a high-pressure center rather than an ordinary quiet day.
Common in fair weather, and typical of the large continental highs that dominate the interior United States in winter.
pressure and how you feel
Headaches, migraines, and aching joints are widely reported around pressure changes, and the research finds a real but inconsistent association — most often with falling pressure rather than with any particular value. A barometer sitting steadily at 1025 hPa is a much less likely trigger than a fast drop toward it.
If your symptoms genuinely track the weather, the number to watch is the three-hour change, not the level. This is general information about atmospheric pressure, not medical advice.
nearby readings
For the physics underneath all of this — why rising pressure suppresses cloud and falling pressure builds it — read barometric pressure explained, or see how to read a surface pressure map. The full index of readings is at the pressure reference.
What does a barometric pressure of 1025 hPa mean?
1025 hPa (30.27 inHg) is 11.75 hPa above the standard 1013.25 hPa, which classifies as above normal — fair-weather high pressure. On its own the number is only half the signal: the band tells you the regime, and the direction of change tells you the forecast. Rising, it means the high is strengthening or moving closer. Falling, it means the high is weakening or moving off.
Frequently Asked Questions
Is 1025 hPa high or low barometric pressure?
1025 hPa is above standard, by 11.75 hPa. Standard sea-level pressure is 29.92 inHg or 1013.25 hPa, and meteorologically this reading falls in the above normal band — fair-weather high pressure. Common in fair weather, and typical of the large continental highs that dominate the interior United States in winter.
What is 1025 hPa in inHg?
1025 hPa equals 30.27 inHg. The two scales measure the same thing: 1 inHg is 33.8639 hPa, so to convert inHg to hPa multiply by 33.8639, and to convert hPa to inHg multiply by 0.02953. The same reading is also 768.8 mmHg and 102.5 kPa.
What weather comes with 1025 hPa?
Clear or mostly clear skies, light wind, and stable air. In summer this produces hot, hazy afternoons; in winter, cold nights with strong radiational cooling and the risk of frost or fog by morning. But the reading alone will not give you a forecast — the tendency will. The high is weakening or moving off. A fall from this level is not an immediate storm signal — it is the start of a return toward ordinary, and worth watching for a continued decline.
Does 1025 hPa cause headaches?
Many people report headaches, migraines, and joint pain around pressure changes, and the research finds a real but inconsistent association — most often with falling pressure rather than with any particular value. A steady reading of 1025 hPa is far less likely to be the trigger than a rapid drop toward it. If symptoms track your barometer, the rate of change is the number to watch, not the level.
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