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SKYDB

SKYDB Building database

Tall buildings worldwide, with heights, construction status and the companies involved.

Rankings of tall buildings

Tall Building Markets

  • Global building statistics
  • Biggest cities worldwide
  • Country market overviews
  • Construction activity
  • Annual completions
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SKYDB Awards

The community is honoring the best new skyscrapers. A legacy since 1999.

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SKYDB Community

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SKYDB Products

Professional building research, data exports and API access, plus advertising offerings.

Research & data

Consulting & advertising

SKYDB Insights charts showing buildings by decade, status, use, floor count and height

SKYDB Insights

Professional research into buildings and participating companies.

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Tall buildings, tracked.

SKYDB is collecting verifiable information about buildings.

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Using SKYDB

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Who we are

SKYDB is the source for tall building information worldwide.

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Interactive building map

Explore all projects on an interactive map anywhere on earth.

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definition strict definition

humidity

Measurements of moisture in air or other gases as an absolute quantity or a percentage of saturation.

Humidity measurements describe the amount of moisture content in air or in other gases, either as an absolute quantity per unit of volume (sometimes factoring in the temperature), or as a relative percentage of maximum possible humidity.

An absolute humidity gives a moisture quantity for a specified volume of gas. Relative humidity expresses the moisture level in relation to saturation at the relevant temperature.

A percentage and a mass per cubic meter are different forms of measurement. Controlled interior humidity specifically uses a deliberately maintained relative percentage inside a building space.