Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Champions League Prediction) 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 |
|---|---|
| 24°C | 100% |
| 25°C | 1% |
| 18°C or below | 0% |
| 19°C | 0% |
| 20°C | 0% |
| 21°C | 0% |
| 22°C | 0% |
| 23°C | 0% |
| 26°C | 0% |
| 27°C | 0% |
| 28°C or higher | 0% |
Market context
The market hinges on the actual maximum temperature recorded at São Paulo-Guarulhos International Airport on 6 July 2026, with resolution sourced from Wunderground’s daily high data. Current crowd-implied probability for a “YES” outcome sits at 0%, yet Polymarket traders are heavily backing the 24°C range at 48–52%, followed by 25°C at 21–26%, suggesting the implied high is narrowly centred in the 24–25°C band [1]. This aligns with historical norms: July is São Paulo’s coldest month, with average highs of 21.8°C, though daily peaks typically range between 23°C and 27°C [3][8]. Recent data from AccuWeather forecasts July 2026 highs of 66–78°F (19–26°C), with an average of 73°F (23°C), reinforcing the 24°C expectation [6].
Traders should monitor real-time Wunderground updates for SBGR on 6 July, as revisions to recorded temperatures are only accepted until the first datapoint for 7 July is published [1]. While Rio recently hit a perceived 62.3°C during a heatwave, São Paulo remains one of Brazil’s cooler regions, with an average daily maximum of 28°C [2]. No immediate weather anomalies or official suspensions have been announced for the airport station, but any sudden shift in cloud cover or rainfall could alter the high. Watch for Wunderground’s live feed and AccuWeather’s hourly revisions, as these are the primary catalysts that will confirm or contradict the 24°C consensus [6].
Methodology
Football-specific comparison page for Highest temperature in Sao Paulo on July 6?. 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 (US-focused) or Manifold (play-money).
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.
- When do sports markets resolve?
- Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.
- 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.
- Which sports markets are available?
- Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.
- 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.
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