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Interactive atmospheric pressure map. ICON and GFS models. Shows global forecasted mean sea-level pressure.
Global maps of air pressure. The maps show the global distribution of the monthly means respectively the anomalies of the air pressure reduced to sea level. In areas with little data, especially over the oceans, there are hardly any measurements that allow direct analyses from observations.
In order to separate air traffic and prevent collisions, aircraft in cruise flight fly at common pressure levels known as flight levels (abbreviated to FL). The flight levels correspond to the altitude in 100-ft increments (hectofeet) above the pressure surface of 1,013.25 hPa calculated according to the standard atmosphere.
See current wind, weather, ocean, and pollution conditions, as forecast by supercomputers, on an interactive animated map. Updated every three hours.
25 sty 2024 · A flight level (FL) is a standard pressure altitude, expressed as three numbers. Aircraft flying on flight levels all measure their altitude from the same pressure setting, 1013.2 Hpa (or 29.92 InHg).
The air pressure is computed assuming an International Standard Atmosphere pressure of 1013.25 hPa (29.92 inHg) at sea level, and therefore is not necessarily the same as the aircraft's actual altitude, either above sea level or above ground level.
For the last 50 years, meteorologists have analyzed weather maps of upper air conditions using constant pressure surfaces. These charts are prepared for several mandatory pressure levels twice daily (0000Z and 1200Z) from the temperature, humidity and wind data provided by the operational radiosonde network, supplemented with data from aircraft ...
