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Kp Index History

GET /spaceweather/kp/history

Full time series of planetary Kp index readings collected continuously from NOAA SWPC. Filter with ?start and ?end. Valuable for aurora forecasters correlating past activity with sightings, space weather researchers studying storm distributions, and dashboards plotting geomagnetic trends over months or years.

Parameters

start optional

Start datetime

end optional

End datetime

limit optional default: 500

Max rows (cap 10000)

Example Requests

Basic usage
curl "https://nordapi.ee/api/v1/spaceweather/kp/history?limit=500"

Live Response 

{
  "count": 24,
  "data": [
    {
      "kp_index": 0.33,
      "time": "2026-04-13T18:00:00Z"
    },
    {
      "kp_index": 0.67,
      "time": "2026-04-13T21:00:00Z"
    },
    {
      "kp_index": 2.0,
      "time": "2026-04-14T00:00:00Z"
    },
    {
      "kp_index": 0.33,
      "time": "2026-04-14T03:00:00Z"
    },
    {
      "kp_index": 0.33,
      "time": "2026-04-14T06:00:00Z"
    },
    {
      "kp_index": 1.33,
      "time": "2026-04-14T09:00:00Z"
    },
    {
      "kp_index": 1.0,
      "time": "2026-04-14T12:00:00Z"
    },
    {
      "kp_index": 1.33,
      "time": "2026-04-14T15:00:00Z"
    },
    {
      "kp_index": 0.33,
      "time": "2026-04-14T18:00:00Z"
    },
    {
      "kp_index": 0.33,
      "time": "2026-04-14T21:00:00Z"
    },
    {
      "kp_index": 0.67,
      "time": "2026-04-15T00:00:00Z"
    },
    {
      "kp_index": 1.33,
      "time": "2026-04-15T03:00:00Z"
    },
    {
      "kp_index": 1.33,
      "time": "2026-04-15T06:00:00Z"
    },
    {
      "kp_index": 0.67,
      "time": "2026-04-15T09:00:00Z"
    },
    {
      "kp_index": 0.67,
      "time": "2026-04-15T12:00:00Z"
    },
    {
      "kp_index": 1.67,
      "time": "2026-04-15T15:00:00Z"
    },
    {
      "kp_index": 1.0,
      "time": "2026-04-15T18:00:00Z"
    },
    {
      "kp_index": 1.67,
      "time": "2026-04-15T21:00:00Z"
    },
    {
      "kp_index": 0.67,
      "time": "2026-04-16T00:00:00Z"
    },
    {
      "kp_index": 1.0,
      "time": "2026-04-16T03:00:00Z"
    },
    {
      "kp_index": 1.0,
      "time": "2026-04-16T06:00:00Z"
    },
    {
      "kp_index": 0.67,
      "time": "2026-04-16T09:00:00Z"
    },
    {
      "kp_index": 0.67,
      "time": "2026-04-16T12:00:00Z"
    },
    {
      "kp_index": 0.33,
      "time": "2026-04-16T15:00:00Z"
    }
  ],
  "success": true
}
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