Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Today) 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 |
|---|---|
| 31°C | 100% |
| 25°C or below | 0% |
| 26°C | 0% |
| 27°C | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 32°C | 0% |
| 33°C | 0% |
| 34°C | 0% |
| 35°C or higher | 0% |
Market context
Shanghai is currently experiencing heavy rain this morning with temperatures hovering around 30°C, a sharp deviation from the scorching highs typical of mid-July at Pudong International Airport. The 0% YES probability reflects this immediate wetness, as cloud cover and precipitation have suppressed the thermal buildup required to breach extreme temperature thresholds today.
Historically, July in Shanghai is one of the hottest months, with daytime temperatures routinely exceeding 35°C and extreme peaks reaching 40°C in previous years [5]. While the average high sits near 32°C, the month frequently delivers 7–15 days where highs surpass 35°C, making a 0% implied probability for any significant heat event unusually low for this season unless the rain persists through the afternoon [5][7]. The current muggy conditions and 76% average humidity usually amplify heat stress, yet today’s precipitation acts as a cooling anchor [5].
Traders should monitor the afternoon cloud dissipation and wind shifts, as the forecast indicates a transition to cloudy skies by evening with winds gusting up to 52kt [3]. The key catalyst is whether the heavy rain clears before the 3 PM peak heat window, which historically delivers the day’s maximum temperature [7]. If the sky remains overcast or rain continues, the temperature will likely stay capped near 30°C, validating the current low probability; however, any rapid clearing could trigger a sudden spike toward 35°C or higher, altering the settlement outcome before the 12:00Z deadline [1][10].
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 Prediction Today, 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.
- 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.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- 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 Prediction Today trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
Trade Highest temperature in Shanghai on July 12? on Prediction Today
Live order book, 0% fees, USDC settlement in seconds.
Open live market →