Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open the market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open the market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open the market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open the market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 38°C | 100% |
| 30°C or below | 0% |
| 31°C | 0% |
| 32°C | 0% |
| 33°C | 0% |
| 34°C | 0% |
| 35°C | 0% |
| 36°C | 0% |
| 37°C | 0% |
| 39°C | 0% |
| 40°C or higher | 0% |
Market context
Chengdu is already experiencing its peak summer heat today, with July consistently delivering the city’s hottest conditions and afternoon highs frequently reaching 33°C or higher. The market for the highest temperature on 13 July 2026 at Chengdu Shuangliu International Airport currently prices the YES outcome at 0%, implying the crowd expects the temperature to fall outside the specific range offered, despite historical data showing July days often hit 37–38°C.
Historical records frame this near-zero probability as a potential mispricing rather than a certainty of cool weather. July and August are the hottest months in Chengdu, with average highs of 28–30°C and frequent spikes to 38°C, while the city’s absolute recorded extreme reached 39.4°C [2][6]. A comparable market resolved correctly on 6 July 2026 when Chengdu hit 37°C, confirming that mid-July temperatures routinely breach the upper thresholds traders might dismiss [9]. The 0% price ignores this pattern, suggesting the crowd may be underestimating the likelihood of a heat spike before the settlement window closes at 12:00 UTC.
Traders should monitor real-time readings from Wunderground for the Shuangliu station, the designated resolution source, as the day’s peak temperature is still unfolding [7]. China recently experienced its hottest July on record since 1961, a macro-climate catalyst that increases the probability of extreme daily highs in Sichuan [4]. With USDC settlements on Polygon using conditional tokens, the on-chain mechanics allow immediate position adjustments if the live temperature approaches the range boundary, making the remaining two hours before settlement critical for reassessing the 0% implied probability.
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 PolyGram, which mirrors the Polymarket order book directly.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
FAQ
- 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.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram 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 Chengdu on July 13? on PolyGram
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