About

El Niño Atlas shows, for every country, what the 2026–27 El Niño is likely to mean there: the current forecast odds, what happened in past El Niños, and the air-quality forecast for the main cities. Everything is built from official data from NOAA and the European Copernicus programme.

The site is run independently. It is not affiliated with, or endorsed by, NOAA, Copernicus, ECMWF, the WMO or any national weather service.

How it is funded

Through advertising and, later, clearly labelled sponsorship of the email alerts.

Our rules

1. Warnings links, outlooks and country pages are always free.
2. We report odds from official data and say when the data is weak.
3. No scare headlines.
4. Sponsors and advertisers never influence content. Sponsored lines are labelled.
5. Mistakes are corrected quickly and listed publicly on the corrections page.