Solar wind — December 4, 2025

December 4, 2025

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Solar wind parameters

Solar wind speed

678 km/s high (average for 24 hours)

Solar wind speed for December 3 and 4, 2025, according to data from the ACE spacecraft Solar wind speed for December 3 and 4, 2025.

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Solar wind density

2.6 cm^-3 normal (average for 24 hours)

Solar wind density for December 3 and 4, 2025, according to data from the ACE spacecraft Solar wind density for December 3 and 4, 2025.

PNG API: JSON | TXT

Solar wind temperature

347 000 K high (average for 24 hours)

Solar wind temperature for December 3 and 4, 2025, according to data from the ACE spacecraft Solar wind temperature for December 3 and 4, 2025.

PNG API: JSON | TXT

Solar wind magnetic field induction

8.8 nT normal (average for 24 hours)

Solar wind magnetic field induction for December 3 and 4, 2025, according to data from the ACE spacecraft Solar wind magnetic field induction for December 3 and 4, 2025.

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The Bz component of the solar wind magnetic field

+0.1 nT positive (average for 24 hours)

The Bz component of the solar wind magnetic field for December 3 and 4, 2025, according to data from the ACE spacecraft. A negative, blue Bz value (southern direction of the field) promotes the development of magnetic storms and northern lights. The Bz component of the solar wind magnetic field for December 3 and 4, 2025.

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