Kp index — May 2026
The Kp archive
GFZ definitive record · 3-hour UTC intervals · 1932 → 2026-07-31
Max Kp
6.0
4 May · G2
Storm nights
4
G1×1G2×3
Time at storm level
3.2%
intervals at Kp ≥ 5−
Avg Kp
1.9
all intervals
Tap a day — its eight intervals open here.
Highlights
- G2 storm · May 4–5 · peak Kp 6.0
2026 · the year at a glance — storm nights by month · year peak Kp 8.7
All-time record: Kp 9.0 — reached on 27 days, most recently 2024-05-11.