Polymarket’s prediction market on whether July 2026 will be the hottest month on record saw its YES contract price climb sharply by 45.0 percentage points in the past 24 hours, rising from 35.5% to 80.5%. This dramatic repricing was supported by whale activity, with net whale flow of $11K into YES, driven by $16K in whale buy volume against $4K in sells across 32 unique whales.
Overall 24-hour volume on the market was $17K, nearly matching the lifetime volume of $28K, reflecting heightened trader interest among 112 unique participants. The strong alignment between whale flow and price suggests that large traders are reinforcing the market’s shift toward a higher probability of record heat in July 2026.
Notably, the Polymarket YES price of 80.5% differs significantly from the Polydata on-chain midprice of 62.0%. This discrepancy indicates a divergence between Polymarket’s live trading sentiment and the broader on-chain aggregated data.
The sizeable price move combined with concentrated whale buying signals a consensus shift toward expecting an unprecedented heat record in July 2026, marking a significant moment in climate event forecasting on prediction markets.
| Market | Will July 2026 be the 1st hottest on record? |
|---|---|
| Market ID | 2820808 |
| 24h price change | +45.0 pp |
| YES now (PM Breaking) | 80.5% |
| YES ~24h ago (est.) | 35.5% |
| YES (Polydata overview) | 62.0% |
| Whale net flow (24h) | $11K |
| Whale buy / sell (24h) | $16K / $4K |
| Unique whales (24h) | 32 |
| Volume 24h (PM) | $17K |
| Unique traders (Polydata) | 112 |
Source: Polydata API v3 · /whales/flow + Polymarket Breaking · snapshot 2026-07-15. Data: Polydata API v3. On-chain figures are public. Realized PnL is computed over resolved markets only and excludes open positions, so it is conservative versus the Polymarket UI. This is not investment advice.