SOI
Southern Oscillation Index
10 × standardized Tahiti − Darwin SLP anomaly, 30-day mean (BoM style; negative = El Niño).
DATA THROUGH 2026-10-12 · UPDATED 2026-10-13 11:02 UTC
10 × standardized Tahiti − Darwin SLP anomaly, 30-day mean (BoM style; negative = El Niño).