retrieve real-time space-weather json products from noaa swpc
domain: services.swpc.noaa.gov · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
No authentication is required; fetch static JSON files directly under https://services.swpc.noaa.gov/products/.
For solar wind, GET https://services.swpc.noaa.gov/products/solar-wind/plasma-5-minute.json and mag-5-minute.json (also available in 1/2/3/6/7-day windows) for real-time-solar-wind spacecraft data.
For geomagnetic activity, GET the planetary K-index JSON product for the latest observed 3-hour K/A-index values.
Treat the first row of each JSON array as a header/column-name row — SWPC's format uses arrays-of-arrays with labels in row 0, not an array of named objects — and map columns accordingly.
Poll on a cadence matching the file's own update interval; these are periodically-refreshed static files, not a live query API.
Known gotchas
Response bodies are arrays-of-arrays with a header row, not typical JSON records — a naive JSON parse won't give you named fields without an extra mapping step.
SWPC has announced JSON format/product changes and deprecations for some older products in 2026 — verify current filenames under /products/ before hardcoding URLs.
Real-time solar wind JSON covers only the trailing ~7 days; it is not a historical archive endpoint.
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