SimpleFunctions
ClosedLast odds shown below are frozen at close (Sep 11, 2026). Future questions tracked on /odds.
Winner-take-all answer·4 source contracts·Kalshi 4·closed just now·Closes Oct 16, 2026 · 34d

Apr 2026 temperature increase

Leader sits at 51% across 4 bound outcomes, runner-up at 23%. This is a winner-take-all market — the headline is the leader’s price, not an arithmetic mean.

Leader probability

51%

1.30001 or above

runner-up 23¢leader 51¢

Outcomes

4

winner-take-all

Runner-up

23¢

1.24 to 1.30

Spread

28pp

contested

24h volume

$86

thin orderbook

Closes

Oct 16, 2026

34 days

Venue

Kalshi

4 bound

30-day trend

0%50%100%-30d-3w-2w-1wtoday1.30001 or above: 56% (13 days, 12 points)1.30001 or above: 56% on 2026-09-101.24 to 1.30: 23% (13 days, 8 points)1.24 to 1.30: 23% on 2026-09-101.17 to 1.23: 4% (13 days, 3 points)1.17 to 1.23: 4% on 2026-09-10
1.30001 or above56¢1.24 to 1.3023¢1.17 to 1.234¢
Top 3 candidates by current price · 13d

Bracket family

How the bracket ladder is priced.

Each row is one outcome on the venue. Sorted by 24h volume — the heaviest book is at the top.

Analysis

This market is pricing the probability that June 2026's global temperature anomaly will fall between 1.10°C and 1.16°C above the pre-industrial baseline. The 50% probability on this outcome reflects genuine uncertainty about near-term climate variability. Temperature outcomes depend on the combined effect of underlying warming trends, natural oscillations like ENSO cycles, and volcanic activity. The market is currently tilted toward modest warming in that band rather than either more extreme heat (1.17–1.23°C) or cooler conditions (1.03–1.09°C). Final resolution will depend on official temperature datasets released by agencies like NASA GISS and NOAA, typically published within weeks after month-end. The runner-up outcome at 21% suggests traders see meaningful tail risk toward lower anomalies, while the highest-temperature band at 16% indicates less conviction about record-breaking heat in this specific month.

  • Ocean temperature patterns and ENSO phase in mid-2026 will directly influence atmospheric heating; La Niña conditions historically cool global temperatures while El Niño warms them
  • Volcanic aerosol loading and stratospheric optical depth as of June 2026 will partially offset greenhouse-gas-driven warming
  • The underlying long-term warming trend has been approximately 0.18°C per decade, meaning baseline expectations shift measurably year-to-year
  • Official temperature data source and methodology (NASA GISS, NOAA, Copernicus, or Berkeley Earth) will determine the exact anomaly value and which contract wins
  • Market liquidity concentration on the 1.10–1.16°C band ($674 24h volume) suggests professional traders view that range as modal, though the 16¢ price on the warmest band ($1331 volume) reflects active hedging

What moved the line

  • Sep 91.30001 or above30pp8656¢ · Kalshi
  • Sep 91.24 to 1.3016pp521¢ · Kalshi
  • Sep 51.30001 or above5pp9085¢ · Kalshi

Recently closed in climate

These markets stopped trading. Last odds and any captured outcome are shown above — full settlement detail lives at the venue.

More like this

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How we compute these odds

SimpleFunctions aggregates live prediction-market contracts from Kalshi and Polymarket. Each slug groups contracts that resolve on the same underlying event, identified by venue event_id.

For binary slugs, the headline probability is the liquidity-weighted mid-price across all bound contracts. For multi-outcome slugs (e.g. elections with 3+ candidates), the headline is the leader’s price; we never arithmetically average disjoint outcomes — that would produce a number with no real-world meaning.

Snapshots refresh every 5 minutes during market hours; daily aggregates are computed at 04:00 UTC. The 30-day sparkline is drawn from per-ticker daily means stored in market_indicator_daily; 24h delta and movement events are derived from the same source.

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