Azavea Climate Lab and API

Azavea’s climate change analysis tool is designed to help local decision-makers adapt with standardized, localized and accessible climate data. The application supports interactive climate impact modeling, and is scaled to cities nationwide. The Climate API provides access to historic and projected (1950-2100) low temperature, high temperature and precipitation data  - with 22 climate indicators for over 1,000 U.S. locations. The Lab features downloadable charts for inclusion in presentations and briefs, as well as direct downloads for the data and reproducible API calls for users looking to incorporate these data into other applications.

Azavea processed the Localized Constructed Analogs (LOCA) for North America and the Global Daily Downscaled Projections (NEX-GDDP), and two carbon scenarios (RCP 4.5and RCP 8.5) to produce temperature and precipitation data for cities across the U.S.

Indicators available include:

  • Accumulated Freezing Degree Days
  • Average High Temperature
  • Average Low Temperature
  • Cooling Degree Days
  • Diurnal Temperature Range
  • Dry Spells
  • Extreme Cold Events
  • Extreme Heat Events
  • Extreme Precipitation Events
  • Frost Days
  • Heat Wave Duration Index
  • Heat Wave Incidents
  • Heating Degree Days
  • Max High Temperature
  • Max Temperature Threshold
  • Min Low Temperature
  • Min Temperature Threshold
  • Percentile High Temperature
  • Percentile Low Temperature
  • Percentile Precipitation
  • Precipitation Threshold
  • Total Precipitation
  • Yearly Dry Spells
  • Yearly Max Consecutive Dry Days


In 2015, Azavea won a Phase II Small Business Innovation Research grant of $1.5 million by the U.S. Department of Energy to develop this application.


Publication Date: 2018

Resource Category:

Resource Types:

  • Modeling tool


  • Air temperature
  • Precipitation changes

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