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Geomagnetic activity in January 2025
Mean Ap13.2No. 486 of 1138
G1+ days3
G3+ days1
Max Ap811 Jan 2025
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 1 Jan 2025 | 8o | 81 | G4 |
| 2 Jan 2025 | 5- | 21 | G1 |
| 4 Jan 2025 | 5+ | 31 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| January 2024 | 5.5 | 0 | 0 |
| January 2025 | 13.2 | 3 | 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 13.2 in January 2025, No. 486 of 1138 months since 1932; 3 days reached G1 or higher.