Geomagnetic storms in Boise on July 21, 2026

July 21, 2026

Boise change region

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Maximum Kp index on July 21, 2026

Kp = 4-

The Earth's magnetosphere was quiet

Kp = 4-

Changes in the geomagnetic index Kp from July 19 to 21, 2026 for mid latitudes

Time zone — UTC−06 — summer time (Boise | geographic coordinates — 43.61 N 116.24 W)

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PNG API: JSON | TXT

Changes in the maximum daily geomagnetic index Kp in July 2026 for mid latitudes

Time zone — UTC−06 — summer time (Boise | geographic coordinates — 43.61 N 116.24 W)

June 2026 August 2026

PNG API: JSON | TXT

Geomagnetic index A_p	14
Solar radio flux F10.7	149