Pressure Facts
The lowest pressure reading recorded was on September 2, 1935 on the Florida Keys, an unusual 892.3 millibars (26.35 inches of mercury). This has only been beaten by the ultra-low pressure recorded at the centre of hurricanes. On October 12, 1979 a record 870 mb of central pressure was recorded in the heart of Typhoon Tip.

The highest sea level pressure figures recorded in the world are generally from Siberia. A figure of 1075.2 millibars (31.75 inches of mercury) was recorded on 14 January, 1893 at Irkutsk, Siberia. The highest recorded air pressure, adjusted to sea-level, was 1083.8 millibars (32 inches of mercury) at Agata, Siberia, on 31 December 1968.

Highest and Lowest
The average air pressure at sea-level over the whole planet is 1013.2 millibars (29.92 inches of mercury).