CHIRPS v3 (UCSB Climate Hazards Center)
Satellite-plus-gauge rainfall back to 1981, globally, at ~5km. The workhorse for regions with no gauge network.
What this is
CHIRPS blends satellite thermal imagery with ground-station data into a quasi-global daily rainfall record from 1981 to present. Coverage runs 60°N–60°S at 0.05° (~5km). Available via UCSB CHC bulk download, Google Earth Engine, and COG. Version 3 is current; v2 retires end-2026.
Why we surface it
Where rain gauges are sparse — which is most of the world — CHIRPS is often the most credible historical rainfall series available. Public domain (v3 — CC0-registered).
What you can do with it
Shown for commercial use. Personal, research, and nonprofit use is often more permissive — switch the verdict lens on the catalog.
- Internal / individual use
- Public domain. Use it for anything — internal, resale, AI training, closed products. No attribution legally required (crediting the source is still the decent thing to do).
- Redistribute the data
- Public domain. Use it for anything — internal, resale, AI training, closed products. No attribution legally required (crediting the source is still the decent thing to do).
- Republish a derivative
- Public domain. Use it for anything — internal, resale, AI training, closed products. No attribution legally required (crediting the source is still the decent thing to do).
- Build into a private product
- Public domain. Use it for anything — internal, resale, AI training, closed products. No attribution legally required (crediting the source is still the decent thing to do).
This decoder is a starting point, not legal advice. For commercial deployment, run the actual license terms past someone who reads them for a living.
○ Planned
Not in the map yet — this source is on the V1 backlog. Schema, sample, and citation slots fill in once the layer ships.
Related — same domain
- NASA POWER — global daily weather & agroclimatologyPublic domain (US Federal — NASA Langley)
- Open-Meteo forecast APICC-BY 4.0 (data) + non-commercial free tier — commercial products, subscriptions, and advertising prohibited; commercial use requires a paid API plan.
- Daymet daily climate (CONUS, 1km)Public domain
- ERA5-Land hourly reanalysis (global)Copernicus licence (CC-BY as of 2025-07-02; commercial OK)