▸1013.25 hPa - at standard atmospheric pressure
- Standard sea-level pressure is 1013.25 hPa (29.92 inHg). Your reading is 0.00 hPa above that baseline.
- Readings between 1000 and 1020 hPa are in the typical fair-weather range. High-pressure systems bring settled, clear conditions with descending, dry air.
- This pressure corresponds to approximately 0 m (0 ft) altitude in the International Standard Atmosphere - useful for aviation altimeter setting.
Next stepAviation altimeters use an inHg or hPa setting called QNH. Set your altimeter to the local QNH to read altitude above mean sea level. For medical or laboratory work, use the mmHg or Pa output. For high-pressure engineering, use bar or MPa.