Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via March Madness Predictions) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 30°C | 100% |
| 23°C or below | 0% |
| 24°C | 0% |
| 25°C | 0% |
| 26°C | 0% |
| 27°C | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 31°C | 0% |
| 32°C | 0% |
| 33°C or higher | 0% |
Market context
Beijing is currently enduring a blistering heatwave that has pushed temperatures well above 30°C, with recent records showing the city soaring past 41°C. This extreme weather pattern, driven by returning heatwaves across northern China, sets a stark backdrop for the prediction market on the highest temperature recorded at the Beijing Capital International Airport Station on 30 June 2026. The crowd-implied probability of 0% for the YES outcome suggests traders are betting against the temperature exceeding a specific threshold, yet historical data indicates such highs are not uncommon in late June.
Historical cases frame how to interpret this low probability. In June 2023, Beijing recorded its hottest day in 60 years, reaching 41.1°C, while Tanghekou in the northeastern suburbs hit 41.8°C, the highest in China for that day. Average June highs in Beijing typically range from 84°F to 87°F (29°C to 31°C), rarely falling below 73°F or exceeding 96°F (35°C). However, with about 10 days in June usually reaching 35°C or higher, the 0% probability appears overly cautious given the region’s tendency for extreme heat during this period.
Traders should monitor real-time weather updates from Wunderground, the official resolution source, and watch for announcements on heatwave intensity or shifts in atmospheric conditions. Recent reports from Reuters confirm that heatwaves have returned to the capital, with temperatures smashing June records. Any sudden changes in cloud cover, wind patterns, or official weather advisories could significantly alter the day’s peak temperature. With the settlement window ending on 30 June 2026 at 12:00 UTC, timely data from these sources will be critical for assessing the market’s trajectory.
Methodology
Sports-specific comparison page for Highest temperature in Beijing on June 30?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.
Resolution & payout
Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.
FAQ
- Are prediction markets better than sports betting?
- Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.
- Can I bet on individual matches?
- Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.
- How fast do sports winnings settle?
- Once the official league outcome is logged in the UMA Oracle (typically 1-2 hours after the final whistle), Polymarket's smart contract triggers USDC payout. To your wallet within minutes.
- What's the difference between match odds and outright odds?
- Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.
- Can I import form data and lineups?
- This page shows the live Polymarket quote as an implied probability. Form data and lineups must be researched separately via sports data providers (e.g. Soccerway, ESPN, FBref) — we surface the market probability, not the sport analysis.
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