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
(1901-2000 mean)
Date	Anomaly	Rank (out of 72)
December 2018	0.95°C	57
November 2018	0.85°C	35
October 2018	1.02°C	62
September 2018	0.83°C	28
August 2018	0.82°C	25
July 2018	0.85°C	35
June 2018	0.80°C	22
May 2018	0.84°C	32
April 2018	0.91°C	51
March 2018	0.88°C	46
February 2018	0.89°C	48
January 2018	0.84°C	32
December 2017	0.96°C	60
November 2017	0.89°C	48
October 2017	0.92°C	52
September 2017	0.87°C	42
August 2017	0.88°C	46
July 2017	0.86°C	39
June 2017	0.78°C	17
May 2017	0.91°C	51
April 2017	0.95°C	57
March 2017	1.11°C	67
February 2017	1.10°C	66
January 2017	1.04°C	63
December 2016	0.90°C	49
November 2016	0.93°C	54
October 2016	0.87°C	42
September 2016	0.96°C	60
August 2016	1.00°C	61
July 2016	0.88°C	46
June 2016	0.85°C	35
May 2016	0.96°C	60
April 2016	1.14°C	69
March 2016	1.33°C	71
February 2016	1.34°C	72
January 2016	1.20°C	70
December 2015	1.12°C	68
November 2015	1.05°C	64
October 2015	1.07°C	65
September 2015	0.93°C	54
August 2015	0.84°C	32
July 2015	0.79°C	18
June 2015	0.87°C	42
May 2015	0.83°C	28
April 2015	0.82°C	25
March 2015	0.94°C	55
February 2015	0.88°C	46
January 2015	0.83°C	28
December 2014	0.80°C	22
November 2014	0.67°C	8
October 2014	0.79°C	18
September 2014	0.85°C	35
August 2014	0.82°C	25
July 2014	0.65°C	5
June 2014	0.72°C	14
May 2014	0.83°C	28
April 2014	0.79°C	18
March 2014	0.80°C	22
February 2014	0.58°C	1
January 2014	0.74°C	15
December 2013	0.70°C	12
November 2013	0.79°C	18
October 2013	0.68°C	9
September 2013	0.76°C	16
August 2013	0.69°C	11
July 2013	0.62°C	4
June 2013	0.71°C	13
May 2013	0.66°C	7
April 2013	0.60°C	2
March 2013	0.65°C	5
February 2013	0.60°C	2
January 2013	0.68°C	9

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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