Climate at a Glance | Global Time Series | National Centers for Environmental Information (NCEI)

Global Time Series

Overview

A RESTful application programming interface (API) is available to access Climate at a Glance data. The API can format desired data as comma-separated values (CSV), JavaScript Object Notation (JSON), and Extensible Markup Language (XML). The Data Service is only available via HTTP Strict Transport Security (HSTS) following Federal government policy.

Request Endpoint Parameters

Accepted values are defined in the table below.

Required Parameters

Required parameters are passed as path parameters.

https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/global/time-series/{region}/{parameter}/{surface}/{timescale}/{month}/{begYear}-{endYear}/data.{format}

Optional Parameters

Note: not applicable to Average Temperature Anomalies (parameter = tavg)

Optional parameters are passed using a GET request. This an optional query component which follows the path, preceded by a question-mark ?, in the form of key=value pairs, and separated by an ampersand &.

…?{basePeriod}=[true|false]&{begBaseYear}=[year]&{begBaseYear}=[year]

Request Parameter	Type	Description
region	String	Accepted surface values in parentheses Accepted Values globe Global (land, ocean, land_ocean) nhem Northern Hemisphere (land, ocean, land_ocean) shem Southern Hemisphere (land, ocean, land_ocean) africa Africa (land) asia Asia (land) europe Europe (land) northAmerica North America (land) oceania Oceania (land) southAmerica South America (land) atlanticMdr Atlantic Main Development Region (land_ocean) caribbeanIslands Caribbean Islands (land_ocean) eastNPacific East N Pacific (land_ocean) gulfOfAmerica Gulf of America (land_ocean) hawaiianRegion Hawaiian Region (land_ocean) arctic Arctic (land_ocean) antarctic Antarctic (land_ocean) coords Enter Coordinates (land_ocean)
parameter	String	Accepted Values tavg Average Temperature Anomaly pcp Precipitation
surface/coordinates*	String	Accepted Values land_ocean Land and Ocean land Land ocean Ocean [-90 - 90],[-180 - 180] Latitude and Longitude* If 'coords' is entered for region, use comma separated latitude (between -90.0* and 90.0) and longitude (between -180.0 and 180.0) with no spaces (e.g., 30.4,84.3).
timescale	Integer, String	Accepted Values 1-60 Number of Months ytd Year to Date
month	Integer	Accepted Values 1-12 January-December 0 All Months
startYear	Integer	4-digit year (must be less than or equal to endYear) Accepted Values 1850-2025 Average Temperature Anomaly 1979-2025 Precipitation
endYear	Integer	4-digit year (must be greater than or equal to startYear) Accepted Values 1850-2025 Average Temperature Anomaly 1979-2025 Precipitation
format	String	Accepted Values csv Comma-Separated Values json JavaScript Object Notation xml Extensible Markup Language
basePeriod	Boolean	Accepted Values true Return anomalies based on the requested base period mean false Return no anomalies
begBaseYear	Integer	4-digit year (must be less than or equal to endBaseYear) Accepted Values 1850-2025 Average Temperature Anomaly 1979-2025 Precipitation
endBaseYear	Integer	4-digit year (must be greater than or equal to begBaseYear) Accepted Values 1850-2025 Average Temperature Anomaly 1979-2025 Precipitation

Please note, global and hemispheric temperature anomalies are with respect to the 1901-2000 average. Coordinate temperature anomalies are with respect to the 1991-2020 average. All other regional temperature anomalies are with respect to the 1910-2000 average. Monthly precipitation data are not available until a few days after temperature data are released.

Region:

Parameter:

Surface:

Latitude:

-90.0 to 90.0

Longitude:

-180.0 to 180.0

Time Scale:

Month:

Start Year:

End Year:

Base Period

Display Base Period
Start: End:

Trend Display Trend
per Decade per Century
Start: End:

Download: CSV JSON XML

Global Land and Ocean Average Temperature Anomalies
May (1901-2000 mean)
Date	Anomaly	Rank (out of 139)
May 2018	0.84°C	137
May 2017	0.91°C	138
May 2016	0.96°C	139
May 2015	0.83°C	136
May 2014	0.83°C	136
May 2013	0.66°C	131
May 2012	0.75°C	133
May 2011	0.56°C	124
May 2010	0.78°C	134
May 2009	0.63°C	127
May 2008	0.51°C	121
May 2007	0.64°C	128
May 2006	0.55°C	123
May 2005	0.66°C	131
May 2004	0.40°C	118
May 2003	0.60°C	126
May 2002	0.66°C	131
May 2001	0.57°C	125
May 2000	0.37°C	114
May 1999	0.32°C	108
May 1998	0.70°C	132
May 1997	0.39°C	117
May 1996	0.33°C	111
May 1995	0.33°C	111
May 1994	0.33°C	111
May 1993	0.30°C	105
May 1992	0.34°C	112
May 1991	0.42°C	119
May 1990	0.52°C	122
May 1989	0.20°C	98
May 1988	0.46°C	120
May 1987	0.32°C	108
May 1986	0.27°C	102
May 1985	0.20°C	98
May 1984	0.36°C	113
May 1983	0.38°C	115
May 1982	0.18°C	96
May 1981	0.28°C	104
May 1980	0.39°C	117
May 1979	0.14°C	90
May 1978	0.11°C	88
May 1977	0.31°C	106
May 1976	-0.18°C	40
May 1975	0.15°C	92
May 1974	0.00°C	69
May 1973	0.28°C	104
May 1972	0.01°C	77
May 1971	-0.01°C	68
May 1970	0.03°C	80
May 1969	0.22°C	100
May 1968	-0.06°C	59
May 1967	0.18°C	96
May 1966	-0.05°C	62
May 1965	-0.11°C	55
May 1964	-0.20°C	34
May 1963	-0.04°C	65
May 1962	-0.04°C	65
May 1961	0.14°C	90
May 1960	-0.07°C	58
May 1959	0.09°C	84
May 1958	0.09°C	84
May 1957	0.11°C	88
May 1956	-0.25°C	20
May 1955	-0.14°C	47
May 1954	-0.17°C	42
May 1953	0.17°C	94
May 1952	0.00°C	69
May 1951	0.03°C	80
May 1950	0.01°C	77
May 1949	0.00°C	69
May 1948	0.11°C	88
May 1947	0.00°C	69
May 1946	0.00°C	69
May 1945	0.15°C	92
May 1944	0.24°C	101
May 1943	0.02°C	78
May 1942	0.11°C	88
May 1941	0.21°C	99
May 1940	0.16°C	93
May 1939	0.00°C	69
May 1938	-0.06°C	59
May 1937	-0.03°C	67
May 1936	-0.14°C	47
May 1935	-0.24°C	22
May 1934	-0.05°C	62
May 1933	-0.22°C	27
May 1932	-0.12°C	54
May 1931	-0.13°C	51
May 1930	-0.17°C	42
May 1929	-0.34°C	9
May 1928	-0.19°C	35
May 1927	-0.22°C	27
May 1926	-0.19°C	35
May 1925	-0.21°C	30
May 1924	-0.14°C	47
May 1923	-0.23°C	25
May 1922	-0.30°C	14
May 1921	-0.19°C	35
May 1920	-0.19°C	35
May 1919	-0.17°C	42
May 1918	-0.41°C	8
May 1917	-0.51°C	1
May 1916	-0.22°C	27
May 1915	0.00°C	69
May 1914	-0.18°C	40
May 1913	-0.42°C	7
May 1912	-0.19°C	35
May 1911	-0.49°C	2
May 1910	-0.30°C	14
May 1909	-0.44°C	5
May 1908	-0.43°C	6
May 1907	-0.45°C	4
May 1906	-0.17°C	42
May 1905	-0.21°C	30
May 1904	-0.49°C	2
May 1903	-0.32°C	10
May 1902	-0.23°C	25
May 1901	-0.13°C	51
May 1900	-0.06°C	59
May 1899	-0.24°C	22
May 1898	-0.21°C	30
May 1897	-0.05°C	62
May 1896	-0.21°C	30
May 1895	-0.28°C	18
May 1894	-0.25°C	20
May 1893	-0.32°C	10
May 1892	-0.31°C	13
May 1891	-0.13°C	51
May 1890	-0.29°C	17
May 1889	0.09°C	84
May 1888	-0.16°C	46
May 1887	-0.32°C	10
May 1886	-0.24°C	22
May 1885	-0.28°C	18
May 1884	-0.30°C	14
May 1883	-0.14°C	47
May 1882	-0.09°C	57
May 1881	0.08°C	81
May 1880	-0.11°C	55

Citing This Page

NOAA National Centers for Environmental information, Climate at a Glance: Global Time Series, published June 2025, retrieved on June 20, 2025 from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/global/time-series

Climate at a Glance Global Time Series

Global Time Series

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