Aurora & Space WeatherHome › Geomagnetic history › 2023
Geomagnetic activity in October 2023
Mean Ap8.2No. 921 of 1138
G1+ days4
G3+ days0
Max Ap2629 Oct 2023
Daily Ap
Daily max Kp
| Date | Max Kp | Ap | Level |
|---|---|---|---|
| 5 Oct 2023 | 5o | 15 | G1 |
| 21 Oct 2023 | 5o | 21 | G1 |
| 26 Oct 2023 | 5- | 21 | G1 |
| 29 Oct 2023 | 5- | 26 | G1 |
Same month a year earlier
| Month | Mean Ap | G1+ | G3+ |
|---|---|---|---|
| October 2022 | 11.2 | 5 | 0 |
| October 2023 | 8.2 | 4 | 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.
← September 2023November 2023 →
About this page
Mean Ap 8.2 in October 2023, No. 921 of 1138 months since 1932; 4 days reached G1 or higher.