Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Best Prediction Markets) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 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 |
|---|---|
| 32°C | 100% |
| 33°C | 1% |
| 25°C or below | 0% |
| 26°C | 0% |
| 27°C | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 34°C | 0% |
| 35°C or higher | 0% |
Market context
On 6 July 2026, the real-world event at stake is the peak temperature recorded at Guangzhou Baiyun International Airport, a critical metric for a city where July routinely delivers daytime highs between 34°C and 37°C, with extremes often surpassing 38°C[1][2]. Historical data confirms that Guangzhou’s subtropical monsoon climate ensures long, hot summers from May to September, making a temperature below 32°C highly improbable for this date[1]. The current crowd-implied probability of 0% for a “YES” outcome (likely defined as a temperature below a specific low threshold) aligns perfectly with analyst consensus, as sportsbook lines for similar heat contracts in the region consistently price in extreme warmth, reflecting a near-total divergence from any scenario suggesting cool conditions[3][5].
Traders must monitor the arrival of typhoons, which frequently influence rainfall and temperature patterns in Guangzhou from July to September, potentially causing sudden thunderstorms that could temporarily lower peak temperatures[1]. While the settlement window ends on 6 July 2026 at 12:00 UTC, the primary catalyst remains the daily sunshine hours, which peak in July with approximately seven hours of direct light, reinforcing the likelihood of high temperatures[1]. Recent reports from Xinhua News Agency highlight that Guangzhou experienced its longest summer since 1961, underscoring a trend of record-breaking heat that further validates the 0% probability for cooler outcomes[8]. No significant weather announcements currently suggest a deviation from this established pattern, leaving the market firmly anchored in expectations of extreme heat.
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets, which mirrors the Polymarket order book directly.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
FAQ
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Best Prediction Markets. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
Trade Highest temperature in Guangzhou on July 6? on Best Prediction Markets
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