Tomorrow.io's constellations of radar and microwave sounder satellites provide frequent and global observations of atmospheric and weather data to support accurate and timely forecasts. The company's Pathfinder satellites feature Ka-band radar instruments that offer detection of near-surface precipitation and surface scatterometry and its constellation of microwave sounder satellites provides global, high-frequency measurements of atmospheric temperature, water vapor, and precipitation to support forecasting and weather prediction, climate science, hazard risk assessment, and other applications.

Authorized Data Use and Users

All members of the U.S. Government and researchers funded by the U.S. Government have access to the Tomorrow.io Level 1C geolocated, calibrated radar reflectivity profiles (L1C-GEOPROF) and the Level 2A radar precipitation (L2A-PRECIP) data products—which include hydrometer water content, characteristic size, and phase (ice or liquid), as well as the surface precipitation rate and phase. Additional outputs include a probabilistic classification of each profile in four categories (probability of surface precipitation, probability of frozen precipitation, probability of convective precipitation, and probability of hail) in the profile.

End User License Agreement

USG EULA

Obtaining Data

To request access to CSDA-distributed data, complete the CSDA Authorization form. The CSDA team will verify if the user is authorized for data access.

Copyright

The CSDA program subscriber agrees that any portion of the Solution that incorporates and presents Datafeed shall prominently display the message "Powered by Tomorrow.io" in a legible manner near such data or any information derived from it. This message shall open a link to https://www.tomorrow.io/ when clicked or touched. View Tomorrow.io Terms of Service.

CSDA Acknowledgment

To help CSDA identify your publications, we request that you include the following acknowledgment when publishing work created using these data: "This work utilized data made available through the NASA Commercial Satellite Data Acquisition (CSDA) Program."

Evaluation

Tomorrow.io NASA quality assessment and data evaluation reports will be made available in the first quarter of 2026.

Additional Information

For more information about Tomorrow.io's commercial data holdings available through NASA's CSDA program access their data catalogue. Currently, Tomorrow.io commercial data available through NASA's CSDA program include the Level 1C geolocated, calibrated radar reflectivity profiles (L1C-GEOPROF) and the Level 2A radar precipitation (L2A-PRECIP) data products.