What just happened?

Interactive explainers for the biggest stories, with every number sourced.

Map of the Pacific showing sea-surface temperature, with the warmest water in orange and yellow along the equator, and the current Niño 3.4 reading in large type.

Niño 3.4 is +3.3°C against normal · NOAA, week of 14 Oct

Published 22 Oct 2026 · Updated 24 Oct 2026 · 22 sources

How we work

Sourced

Every number links to a primary source.

Calm

No outrage, no hype. We say what we don't know.

Hands-on

Try it yourself, not just read about it.

Read how we work