Vegetation Health Index (Global - Dekadal - 1 km) - FAO ASIS

The Vegetation Health Index (VHI) is one of the non-seasonal indictors in FAO ASIS. It illustrates the severity of drought based on the vegetation health and the influence of temperature on plant conditions. VHI is computed in two modalities in ASIS: dekadal (10-day) and monthly. This layer updates every 10-days.

The Vegetation Health Index (VHI) illustrates the severity of drought based on the vegetation health and the influence of temperature on plant conditions. The VHI is a composite index and the elementary indicator used to compute the seasonal drought indicators in ASIS: Agricultural Stress Index (ASI), Drought Intensity and Weighted Mean Vegetation Health Index (Mean VHI).

If the index is below 40, different levels of vegetation stress, losses of crop and pasture production might be expected; if the index is above 60 (favorable condition) plentiful production might be expected. VHI is very useful for an advanced prediction of crop losses.

Phenomenon Mapped: Vegetation Health Index

Units: None

Time Interval: 10-day

Time Extent: 1984-Present

Cell Size: 1 km

Pixel Type: 32-bit Signed Integer

Data Projection: WGS 1984

Mosaic Projection: WGS 1984 Web Mercator

Source: Food and Agriculture Organization of the United Nations

Update Cycle: 10-days + 3-4 days lag

  VHI combines both the Vegetation Condition Index (VCI) and the Temperature Condition Index (TCI). The TCI is calculated using a similar equation to the VCI, but relates the current temperature to the long-term maximum and minimum, as it is assumed that higher temperatures tend to cause a deterioration in vegetation conditions. A decrease in the VHI would, for example, indicate relatively poor vegetation conditions and warmer temperatures, signifying stressed vegetation conditions, and over a longer period would be indicative of drought.   In ASIS, VHI is computed in two temporal granularities: dekadal and monthly. The dekadal/monthly VHI raster layer published is further updated in the following 5 dekads (improve data precision, remove cloud pixel etc.).   Flags of raster file: 251=missing, 252=cloud, 253=snow, 254=sea, 255=background   Explore this and related data in this web application
    More information please visit FAO GIEWS Earth Observation website.
   

Datasets available for download

• VHI_DLayer

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• VHI_D (Explore)HTML

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• Image ServiceHTML

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• 1 km resolution
• ASIS
• Agricultural...
• Agriculture
• Climatology...
• Crop monitoring
• EO-based...
• EO-based crop monitoring
• FAO GIEWS
• Global extent
• NDVI Anomaly
• Near real time
• Non-seasonal Indictor
• VHI
• Vegetation Health Index
• crop monitoring
• dekadal 10 days time series

Additional Info

• Maturity Level 1 (54%)
• Maturity Level 2 (69%)
• Maturity Level 3 (44%)
• Maturity Level 4 (30%)
• Maturity Level 5 (0%)
• Maturity Level 6 (38%)

Field	Value
Last Updated	September 23, 2026, 07:34 (UTC)
Created	March 24, 2026, 21:07 (UTC)
Domain / Topic Domain or topic of the dataset being cataloged.
Title Title for the Dataset.	Vegetation Health Index (Global - Dekadal - 1 km) - FAO ASIS
Description A description of the dataset.	The Vegetation Health Index (VHI) is one of the non-seasonal indictors in FAO ASIS. It illustrates the severity of drought based on the vegetation health and the influence of temperature on plant conditions. VHI is computed in two modalities in ASIS: dekadal (10-day) and monthly. This layer updates every 10-days. The Vegetation Health Index (VHI) illustrates the severity of drought based on the vegetation health and the influence of temperature on plant conditions. The VHI is a composite index and the elementary indicator used to compute the seasonal drought indicators in ASIS: Agricultural Stress Index (ASI), Drought Intensity and Weighted Mean Vegetation Health Index (Mean VHI). If the index is below 40, different levels of vegetation stress, losses of crop and pasture production might be expected; if the index is above 60 (favorable condition) plentiful production might be expected. VHI is very useful for an advanced prediction of crop losses. Phenomenon Mapped: Vegetation Health Index Units: None Time Interval: 10-day Time Extent: 1984-Present Cell Size: 1 km Pixel Type: 32-bit Signed Integer Data Projection: WGS 1984 Mosaic Projection: WGS 1984 Web Mercator Source: Food and Agriculture Organization of the United Nations Update Cycle: 10-days + 3-4 days lag   VHI combines both the Vegetation Condition Index (VCI) and the Temperature Condition Index (TCI). The TCI is calculated using a similar equation to the VCI, but relates the current temperature to the long-term maximum and minimum, as it is assumed that higher temperatures tend to cause a deterioration in vegetation conditions. A decrease in the VHI would, for example, indicate relatively poor vegetation conditions and warmer temperatures, signifying stressed vegetation conditions, and over a longer period would be indicative of drought.   In ASIS, VHI is computed in two temporal granularities: dekadal and monthly. The dekadal/monthly VHI raster layer published is further updated in the following 5 dekads (improve data precision, remove cloud pixel etc.).   Flags of raster file: 251=missing, 252=cloud, 253=snow, 254=sea, 255=background   Explore this and related data in this web application     More information please visit FAO GIEWS Earth Observation website.
Tags / Keywords Keywords/tags categorizing the dataset.	1 km resolution ASIS Agricultural... Agriculture Climatology... Crop monitoring EO-based... EO-based crop monitoring FAO GIEWS Global extent NDVI Anomaly Near real time Non-seasonal Indictor VHI Vegetation Health Index crop monitoring dekadal 10 days time series
Format (CSV, XLS, TXT, PDF, etc) File format of the dataset.
Dataset Size Dataset size in megabytes.	0.08
Metadata Identifier Metadata identifier – can be used as the unique identifier for catalogue entry
Published Date Published date of the dataset.	2022-05-02
Time Period Data Span (start date) Start date of the data in the dataset.
Time Period Data Span (end date) End date of time data in the dataset.
GeoSpatial Area Data Span A spatial region or named place the dataset covers.

Field	Value
Access category Type of access granted for the dataset (open, closed, service, etc).	public
License License used to access the dataset.	Creative Commons Attribution
Limits on use Limits on use of data.
Location Location of the dataset.	https://climate.esri.ca/datasets/hqfao::vegetation-health-index-global-dekadal-1-km-fao-asis
Data Service Data service for accessing a dataset.
Owner Owner of the dataset.	giews_hqfao
Contact Point Who to contact regarding access?	Food and Agriculture Organization of the United Nations
Contact Point Email The email to contact regarding access?	[email protected]
Publisher Publisher of the dataset.	Food and Agriculture Organization of the United Nations
Publisher Email Email of the publisher.
Author Author of the dataset.	giews_hqfao
Author Email Email of the author.
Accessed At Date the data and metadata was accessed.	2026-06-05

Field	Value
Identifier Unique identifier for the dataset.	dd6297fa2d6d462a8f85e769b7cf4805
Language Language(s) of the dataset	English
Link to dataset description A URL to an external document describing the dataset.	https://climate.esri.ca/datasets/hqfao::vegetation-health-index-global-dekadal-1-km-fao-asis
Persistent Identifier Data is identified by a persistent identifier.
Globally Unique Identifier Data is identified by a persistent and globally unique identifier.
Contains data about individuals Does the data hold data about individuals?
Contains data about identifiable individuals Does the data hold identifiable data about individual?
Contains Indigenous Data Does the data hold data about Indigenous communities?
Portal Type Platform type of the source portal.

Field	Value
Version Version of the datatset	None
Source Source of the dataset.	None
Version notes Version notes about the dataset.
Is version of another dataset Link to dataset that it is a version of.	Unified: Vegetation Health Index (Global - Dekadal - 1 km) - FAO ASIS
Other versions Link to datasets that are versions of it.	Vegetation Health Index (Global - Dekadal - 1 km) - FAO ASIS
Provenance Text Provenance Text of the data.	Food and Agriculture Organization of the United Nations
Provenance URL Provenance URL of the data.
Temporal resolution Describes how granular the date/time data in the dataset is.
GeoSpatial resolution in meters Describes how granular (in meters) geospatial data is in the dataset.
GeoSpatial resolution (in regions) Describes how granular (in regions) geospatial data is in the dataset.

Field	Value
Indigenous Community Permission Who holds the Indigenous Community Permission. Who to contact regarding access to a dataset that has data about Indigenous communities.
Community Permission Community permission (who gave permission).
The Indigenous communities the dataset is about Indigenous communities from which data is derived.

Field	Value
Number of data rows If tabular dataset, total number of rows.	1532
Number of data columns If tabular dataset, total number of unique columns.	9
Number of data cells If tabular dataset, total number of cells with data.	13788
Number of data relations If RDF dataset, total number of triples.
Number of entities If RDF dataset, total number of entities.
Number of data properties If RDF dataset, total number of unique properties used by the triples.
Data quality Describes the quality of the data in the dataset.
Metric for data quality A metric used to measure the quality of the data, such as missing values or invalid formats.

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