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Geomagnetic activity in October 2026
Mean Ap11.4No. 635 of 1138
G1+ days2
G3+ days0
Max Ap384 Oct 2026
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 4 Oct 2026 | 6- | 38 | G2 |
| 5 Oct 2026 | 5o | 23 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| October 2025 | 15.7 | 9 | 1 |
| October 2026 | 11.4 | 2 | 0 |
Dates and time slots are UTC. Kp is the 3-hourly planetary geomagnetic index (0–9); Ap is the daily average disturbance. G1–G5 follow the NOAA storm scale (Kp 5- and above counted as G1). Aurora visibility also depends on weather and location. The latest values are preliminary.
About this page
Mean Ap 11.4 in October 2026, No. 635 of 1138 months since 1932; 2 days reached G1 or higher.