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Resources for Heating, Refrigeration, and Air-Conditioning

Heating, refrigerating, and air-conditioning engineers use global weather and climate information to build systems and gauge energy efficiency, indoor air quality, refrigeration, and sustainability. Members of the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) and other building engineers may find the resources below helpful.

Access Tools

Climate Data Online (CDO)

Climate Data Online provides access to a wide variety of NCEI’s historical weather and climate data in addition to station history information.

Launch CDO

CDO Map Tool

The Climate Data Online Mapping Tool displays interactive maps of a variety of hourly, daily, and monthly observations. Various themes based on products, programs, and observation types are available including average, maximum, and minimum temperatures, as well as precipitation data.

Launch CDO Map

Other Organizations

Global Climate Observing System (GCOS)

The Global Climate Observing System (GCOS) provides comprehensive information on the total climate system, involving a multidisciplinary range of physical, chemical, and biological properties as well as atmospheric, oceanic, hydrological, cryospheric, and terrestrial processes.


World Meteorological Organization (WMO)

The World Meteorological Organization (WMO) is the specialized agency of the United Nations for meteorology (weather and climate), operational hydrology, and related geophysical sciences. Under WMO leadership, the National Meteorological and Hydrological Services and its members contribute to the safety and welfare of humanity.

WMO Home