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Geomagnetic activity in October 2025
Mean Ap15.7No. 314 of 1138
G1+ days9
G3+ days1
Max Ap471 Oct 2025
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Oct 2025 | 6+ | 47 | G2 |
| 2 Oct 2025 | 7- | 45 | G3 |
| 3 Oct 2025 | 5o | 28 | G1 |
| 12 Oct 2025 | 5o | 32 | G1 |
| 13 Oct 2025 | 5- | 21 | G1 |
| 18 Oct 2025 | 6+ | 38 | G2 |
| 19 Oct 2025 | 5o | 18 | G1 |
| 30 Oct 2025 | 5+ | 37 | G1 |
| 31 Oct 2025 | 5- | 23 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| October 2024 | 19.0 | 8 | 3 |
| October 2025 | 15.7 | 9 | 1 |
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.
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About this page
Mean Ap 15.7 in October 2025, No. 314 of 1138 months since 1932; 9 days reached G1 or higher.