Yearly Archives

Kp Index Historical Records

Browse detailed Kp Index data by year from 1966 to present. Each year page includes interactive charts, geomagnetic activity summaries, and comprehensive NOAA dataset records.

Main Archive Live Dashboard

Multi-Year Kp Index Comparison

Compare Kp Index across multiple years, normalized to day-of-year (Jan 1 - Dec 31). Use filters, legend search, or the year picker to declutter the chart. Hover to spotlight a year, click to lock the highlight.

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Yearly Archives

Select any year to explore detailed Kp Index records, interactive charts, and geomagnetic activity summaries.

Why Kp Index Matters

Real-Time Forecasting

The Kp Index measures geomagnetic activity on a scale of 0-9. Higher values indicate stronger aurora activity, making it essential for predicting Northern Lights visibility in Alaska.

Historical Patterns

Our archive contains over 60 years of daily Kp measurements, allowing you to identify seasonal trends, solar cycle variations, and historical aurora activity patterns.

Verified Data

All data is sourced directly from NOAA Space Weather Prediction Center archives, ensuring accuracy and reliability for research, forecasting, and aurora viewing planning.