Solar wind — October 21, 2025

October 21, 2025

London change region

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Solar wind parameters

Solar wind speed

503 km/s increased (average for 24 hours)

Solar wind speed for October 20 and 21, 2025, according to data from the ACE spacecraft Solar wind speed for October 20 and 21, 2025.

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Solar wind density

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

Solar wind density for October 20 and 21, 2025, according to data from the ACE spacecraft Solar wind density for October 20 and 21, 2025.

PNG API: JSON | TXT

Solar wind temperature

121 000 K normal (average for 24 hours)

Solar wind temperature for October 20 and 21, 2025, according to data from the ACE spacecraft Solar wind temperature for October 20 and 21, 2025.

PNG API: JSON | TXT

Solar wind magnetic field induction

5.3 nT normal (average for 24 hours)

Solar wind magnetic field induction for October 20 and 21, 2025, according to data from the ACE spacecraft Solar wind magnetic field induction for October 20 and 21, 2025.

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The Bz component of the solar wind magnetic field

+1.8 nT positive (average for 24 hours)

The Bz component of the solar wind magnetic field for October 20 and 21, 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 October 20 and 21, 2025.

PNG API: JSON | TXT