Geomagnetic storms 15 October 2025

On Wednesday, October 15, 2025, a geomagnetic activity level of 4 on the kIndex indicates moderate geomagnetic activity. This level is generally considered to be tranquil, with minimal disruptions to the Earth's magnetic field. While it does not typically lead to severe geomagnetic storms, it may still influence various technologies such as GPS systems and satellite communications. For weather-sensitive individuals, such as those with certain medical conditions or mental health sensitivities, moderate geomagnetic activity may lead to slight fluctuations in mood or physical well-being. Some people report increased fatigue, headaches, or sleep disturbances during times of heightened geomagnetic activity, even at this moderate level. Overall, while a kIndex of 4 is relatively quiet, those who are highly attuned to environmental changes may experience minor symptoms. Maintaining awareness of this level of geomagnetic activity can help individuals prepare and manage any potential impacts on their daily health and routines.