TOTAL VOLUME:

$97.3b

24H VOL:

$231,054,472

24H TRANSACTIONS:

950,106,883

OPEN INTEREST:

$2,101,649,513

828,111

Markets across

14,991

events

MATCHED EVENTS:

944

PLATFORM COVERAGE:

5

Polymarket:

45%

VS.

Kalshi:

55%

BETA
June 2026 Temperature Increase (ºC)

June 2026 Temperature Increase (ºC)? Odds & Prediction Markets

Total volume:
$215,754
Volume 24h:
$15,030
59%
Liquidity:
$0N/A
Open interest:
$79,050
16%
PredictionHero
1.03 to 1.09 98%
kalshi
1.10–1.14ºC 0%
polymarket
1.10 to 1.16 2%
kalshi
May 2026May 2026Jun 2026Jun 2026Jun 2026Jun 2026Jun 2026Jun 2026Jun 2026Jul 2026Jul 2026Jul 2026Jul 2026Jul 2…020406080100
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result

Intro

This market tracks the magnitude of global temperature increase expected in June 2026, measured against a baseline by NASA's Global Land-Ocean Temperature Index. Across Polymarket and Kalshi, the consensus probability that global temperature will increase between 1.20°C and 1.24°C stands at 69.0%. Resolution will be determined by NASA's official Global Land-Ocean Temperature Index data for June 2026, expected to be released by mid-July 2026. Watch for NASA's publication of the June 2026 temperature anomaly data, scheduled for release by August 1, 2026, which will immediately settle this market.

PredictionHero - Resolution Divergence Alerts (RDA)

Divergence Detected

Issue: Kalshi and Polymarket use incompatible market structures. Kalshi's single binary market resolves YES for all possible temperature outcomes, while Polymarket offers seven mutually exclusive bracket markets. This is a structural mismatch, not a threshold or timing divergence.Hero tip: Recognize that Kalshi and Polymarket are not directly comparable markets. Kalshi's YES outcome is certain once June 2026 data is released (barring data unavailability). Polymarket's markets are competitive—exactly one bracket will resolve YES. Use Kalshi for directional conviction on data availability; use Polymarket for precise temperature range prediction.

Critical divergence points:

  • Kalshi: Single binary market covering all temperature ranges. Resolves YES if Land Ocean-Temperature Index for June 2026 falls into any of six brackets: below 1.03, 1.03-1.09, 1.10-1.16, 1.17-1.23, 1.24-1.30, or above 1.30. Guaranteed YES resolution unless data is unavailable.
  • Polymarket: Seven separate binary markets, each asking if temperature falls within a specific bracket: less than 1.10, 1.10-1.14, 1.15-1.19, 1.20-1.24, 1.25-1.29, more than 1.29, with fallback to lowest bracket if no data by August 1, 2026, 11:59 PM ET. Exactly one market resolves YES.
Our PredictionHero Resolution Divergence Alerts (RDA) are there to help users identify potential differences across platforms. They do not replace or supersede the official rules and description of any prediction market. Users are solely responsible for reviewing and understanding the applicable rules and resolution criteria before placing any trade or bet. If you notice a potential inconsistency, discrepancy, or error in an alert, please report it to our team so we can review and improve the accuracy of our data.
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Polymarket

This market will resolve according to the value reported by the Global Land-Ocean Temperature Index for June 2026 when it is released. An anomaly within a named bracket for June 2026 is necessary and sufficient to resolve this market immediately once the data becomes available, regardless of whether the figure for June 2026 is later revised. The primary resolution source for this market will be the figure found in the table titled "GLOBAL Land-Ocean Temperature Index in 0.01 degrees Celsius" under the column "Jun" in the row "2026" (https://data.giss.nasa.gov/gistemp/tabledata_v4/GLB.Ts+dSST.txt). If NASA’s “Global Temperature Index” is rendered permanently unavailable, other information from NASA may be used. If no information for June 2026 is provided by NASA by August 1, 2026, 11:59 PM ET, this market will resolve to the lowest range bracket.

Kalshi

Each outcome resolves to Yes if the Land Ocean-Temperature Index for June 2026 falls within the specified range. The six outcomes cover consecutive temperature bands: below 1.03, 1.03–1.09, 1.10–1.16, 1.17–1.23, 1.24–1.30, and above 1.30, allowing traders to bet on the magnitude of temperature anomaly for that month.

Frequently asked questions

The June 2026 Temperature Increase dashboard aggregates real-time odds and trading activity across Polymarket and Kalshi, tracking how prediction markets price the magnitude of global temperature rise during June 2026. The combined group has generated $215,605 in total volume, with $16,375 traded in the last 24 hours. This cross-platform view reveals consensus expectations and divergence between major prediction markets, helping you monitor how traders collectively assess climate outcomes as the event date approaches.

Prediction market prices reflect real-money consensus from thousands of traders and differ from traditional climate model forecasts. While meteorological agencies issue deterministic projections based on atmospheric physics, prediction markets incorporate uncertainty, geopolitical risk, and market sentiment. The June 2026 event allows direct comparison: if markets price lower temperature increases than climate models suggest, it may signal trader skepticism about model accuracy or expectations of cooling events. Conversely, higher market prices could reflect tail-risk concerns absent from baseline forecasts.

The June 2026 Temperature Increase market resolves on Jul 17, 2026. Resolution depends on official global temperature anomaly data released after the month concludes, typically from established climate monitoring agencies. The exact measurement methodology—whether using satellite data, surface station networks, or blended indices—determines which outcomes settle in-the-money. Traders should monitor announcements from relevant authorities as June ends to understand how the final temperature increase will be calculated and which prediction market outcomes will be deemed correct.

Major catalysts include updated climate forecasts, El Niño or La Niña transitions, volcanic activity, and solar cycle changes. Unexpected weather patterns or atmospheric anomalies reported in early 2026 will shift market expectations. Policy announcements affecting emissions or geoengineering could also influence prices. As June approaches, preliminary monthly temperature data and real-time weather developments will drive volatility. Scientific publications revising climate sensitivity estimates or new satellite measurements may trigger repricing. Traders should track meteorological agencies, climate research releases, and geophysical events throughout the prediction window.

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