2026-09-21 14:47:18
The temperature rise at the heart of El Niño in the Pacific Ocean has now reached 3.05C.
That is higher than the 3.02C set in late November 2015,
the previous high set in the 150 years of modern records.
This temperature is measured against the average of 1991-2020.
The preferred measure of most meteorologists uses a 30-year rolling average as a reference and so takes account of human-caused global heating.
This metric, called ONI (Nino3.4), is on the brink of…


