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Map version history

The Probable Futures mission includes making climate risk information available as a public resource. In keeping with this mission, we periodically update the maps available on the public platform

Sometimes the purpose of an update is to make the latest climate model data available such as when new model data has been widely reviewed and refined by the scientific community. Other times we make updates for more administrative reasons as part of standard software development updates and best practices. When we make updates, we publish a short summary of the update on this page. If you have questions about updates, please contact us at

v2 maps of heat

March 1, 2023

All maps of heat were updated to use 5th and 95th percentiles for the low and high values in the low-mid-high range (which you can see by clicking anywhere on a map). This update aligns our maps of heat with the precipitation and dryness maps which already used 5th and 95th percentiles for the low and high values in the low-mid-high range. Prior to this update, maps of heat used 10th and 90th percentile values for this range. 

All maps of heat were also updated to use a smoother blending technique between regional climate model regions. Before, each grid cell was assigned a weight prior to blending based on its distance to the center of its region. Now, each grid cell is assigned a weight based on its distance to the edge of its region, which minimizes edge effects between different regions. 

With this update, all maps of heat are now on version two (v2).

Initial maps of dryness

September 22, 2022

Five maps of dryness were published as part of the Land volume. This includes maps of changing water balance, drought, wildfire, and climate zones.

Introduction of map versioning and new attribute names

August 8, 2022

All maps are now on version one (v1). Future map versions will use whole number increments such as v2, v3, v4, etc. Tilesets created before the introduction of versioning do not have version names in the tileset ID. Versions are visible to partners in the tileset ID.

We also updated the names of Mapbox tileset feature attributes climate data points to names that are general enough to reflect values present in map data now and in the future. Prior to this update, these tileset feature attribute names included specific references like “pctl_90”, “mean”, and “pctl_10” which made introducing different percentiles challenging. Now, tileset feature attribute names use the following more general suffixes: low, mid, high. To see the full list of tileset feature attributes names used in Probable Futures maps, see the tileset feature attributes section in the developer documentation.

Initial maps of precipitation

March 20, 2022

Six maps of precipitation were published as part of the Water volume.  This includes maps of changing total annual precipitation, snowfall, dry days, wet periods, and historical “1-in-100-year” storms.

Initial maps of temperature

September 22, 2021

Sixteen maps of temperature were published as part of the Heat volume. This includes maps of increasing heat, decreasing cold, and heat and humidity.