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The Planet This Week

One email every Sunday: the planet’s vital signs with a decade of change beside each one, the disaster alerts GDACS published that week, companies whose climate targets moved, and what the tracked scientific bodies said — in their own words.

  • 8 vital signs, each with its chart and its source — CO₂, temperature, air pollution, protected land, renewables, sea level, sea ice and wildlife populations.
  • What is getting betteras well as what is not. Direction comes from each series’ own trend, never our mood.
  • Every number is cited. No forecasts, no rankings we invented, and a dash where a figure is genuinely unknown.

One email every Sunday. Double opt-in: nothing is sent until you confirm. One-click unsubscribe in every issue. Your address is stored to send the newsletter and for nothing else — see what we collect and why.

Right now · El Niño 2026–27

Who said what, and when

The El Niño–Southern Oscillation, as monitored by NOAA’s Climate Prediction Center and the WMO.

NOAA Climate Prediction Center · ENSO Diagnostic Discussion

NOAA Climate Prediction Center: “El Niño Advisory”

Issued 8 October 2026

“Issued when El Niño or La Niña conditions are observed and expected to continue.” — NOAA Climate Prediction Center’s own definition of that label

“El Niño is firmly established in the tropical Pacific. … If this trajectory continues, it may be stronger than anything since our monitoring began - so literally off the charts we have used for the past four decades.”
Source: World Meteorological Organization — El Niño/La Niña Update (August 2026), Secretary-General statement · as of 2026-09-03

Thresholds quoted, not applied

  • “Warm (red) and cold (blue) periods based on a threshold of +/- 0.5°C for the Relative Oceanic Niño Index (RONI), using the 1991–2020 base period.” source ↗
  • “+2.5°C or more for a 3-month RONI value” source ↗

Next scheduled NOAA Climate Prediction Center update: 12 November 2026

Read the issue (archived) ↗Current page at NOAA Climate Prediction Center ↗

Not a forecast, not a ranking by this site: every label and probability above is quoted from the named issuer.

Append-only

Timeline

One entry per issuance, newest first. Entries are never edited or back-filled: a correction is a new entry that supersedes the one it names, and a scheduled update that has not arrived is recorded as its own entry.

Observed

RONI and ONI, °C — CPC files, shown as published

RONI and ONI, °C — CPC files, shown as published. Neutral by design: these are oscillation indices with no “worse” direction, so no colour, arrow or ranking is applied here.
SeasonRONI (°C)ONI (°C)
JAS 2026+1.69+2.16
JJA 2026+1.36+1.80
MJJ 2026+0.97+1.39
AMJ 2026+0.49+0.95
MAM 2026−0.04+0.46
FMA 2026−0.44+0.11
JFM 2026−0.76−0.21
DJF 2026−0.91−0.39
NDJ 2025−1.04−0.60
OND 2025−0.98−0.61
SON 2025−0.93−0.57
ASO 2025−0.78−0.43

Source: NOAA Climate Prediction Center — CPC RONI, ERSSTv6, 1991–2020 base period · as of JAS 2026Source: NOAA Climate Prediction Center — CPC ONI, ERSSTv6, centered 30-year base periods updated every 5 years · as of JAS 2026

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The Planet This Week, every Sunday: the planet’s vital signs with a decade of change beside each, the week’s disaster alerts, company climate-target movements, and the statements above quoted verbatim. Every number carries its source.

One email every Sunday. Double opt-in: nothing is sent until you confirm. One-click unsubscribe in every issue. Your address is stored to send the newsletter and for nothing else — see what we collect and why.

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