Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Mundial 2026 Grupos) Pick polygram.ink (preferred broker) |
97% | 3% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
97% | 3% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 19°C | 97% |
| 20°C | 2% |
| 21°C | 1% |
| 12°C or below | 0% |
| 13°C | 0% |
| 14°C | 0% |
| 15°C | 0% |
| 16°C | 0% |
| 17°C | 0% |
| 18°C | 0% |
| 22°C or higher | 0% |
Market context
The highest temperature recorded at Buenos Aires' Minister Pistarini International Airport on 18 July 2026 will determine this market's resolution. July sits within Buenos Aires' winter season, when daytime highs typically range between 13–16°C, though conditions vary considerably depending on cold fronts moving north from Patagonia and warm air masses from the north.
Historical data from the same station shows July extremes rarely exceed 20°C; the airport's July average maximum hovers around 14°C. Comparable winter days at this location have produced highs between 8–18°C depending on synoptic patterns. The 0% crowd probability suggests traders expect the temperature to fall outside whatever upper threshold the market has defined—likely reflecting the statistical rarity of unusually warm July days at this location rather than any specific forecast signal.
Traders should monitor weather models from mid-July 2026 onwards, particularly the GFS and ECMWF ensembles, which will clarify whether a warm air incursion or blocking high-pressure system might push temperatures above seasonal norms. Real-time observations from Wunderground's historical data feed will be the settlement source, so familiarity with that station's microclimate—its position near the Río de la Plata and exposure to maritime influences—matters for calibrating expectations against broader Buenos Aires city temperatures, which can run 2–3°C warmer than the airport.
Methodology
Football-specific comparison page for Pronóstico: Highest temperature in Buenos Aires on July 18?. 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.
- What are live sports odds on Polymarket?
- Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.
- 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.
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