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Sciencecloses in 4mo

What will the peak RONI be for the 2026–27 El Niño?

This market resolves based on the peak RONI — the single highest Relative Oceanic Niño Index (RONI) value reported by NOAA's Climate Prediction Center (CPC) across the overlapping three-month seasons ASO 2026, SON 2026, OND 2026, NDJ 2026-27, and DJF 2026-27, as published in official NOAA CPC RONI updates (https://www.…

As of 2026年11月3日, "2.25–2.5" leads at 23% implied probability (+3.5pp over the last 24h). The event has traded $164.2K in total ($2.7K in the last 24h) with $13.2K of liquidity across 5 markets. Trading is due to close on 2027年4月1日.

24h volume
$2.7K
Total volume
$164.2K
Liquidity
$13.2K
Markets
5
2027年4月1日
WeatherclimateWeather & Science

Chart, demo trading & order book

Market2.25–2.5
Yes22.5¢
24h Chg+3.5pp
Mkt Vol$79.1K
live
Order bookYes
Market tradeslive · 6s
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Holders and activity

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Markets and probabilities

5 markets
How to read

The percentage is the implied probability of the outcome, between 0% and 100%. For mutually-exclusive markets the sum trends to 100% (no vig). The ▲/▼ arrow shows the change over the selected window (1h/24h/7d/30d) in percentage points (pp). Click a market to see its top holders (with average entry price and position change) and the latest trades.

What will the peak RONI be for the 2026–27 El Niño? — Polymarket implied odds · Polytracker