Safecast radiation measurements API

Safecast radiation measurements API

Safecast's open database of volunteer-collected radiation measurements, with a keyless JSON API and a full CSV download. The API page says: "The Measurement is the basic unit in the Safecast database. A measurement is composed of four key parts." — a captured_at timestamp, a unit, a value and a latitude/longitude geopoint.

Coverage

Worldwide volunteer measurements; the checked sample returned a cpm reading with captured_at, latitude and longitude. Measurements can be filtered near a point (latitude, longitude, distance), by capture time (captured_after, captured_before) and by database insert time (since, until); bGeigie bulk imports and devices have their own endpoints. History start, update frequency, delay and total record count: Not stated on the checked pages.

Verdict

An open, georeferenced radiation record built by volunteers, queryable without a key. Read the licensing carefully, because two different licences are in play: the data page says "Safecast data is published under a CC0 designation" and "This is a public domain designation and means the data is free and open for anyone to use under any circumstance.", while the site footer says "The Safecast website is licensed under a CC BY-NC 4.0 License". The CC0 covers the data; the non-commercial licence covers the website, so the data is not non-commercial. Safecast says credit is not legally required but asks for it anyway. Records are volunteer-contributed instrument readings and carry a numeric user_id rather than a name. Signal Lab links only.