Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Prediction Today Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Prediction Today → |
Polymarket polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Prediction Today → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Prediction Today → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Prediction Today → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Prediction Today → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on Prediction Today.
Active sub-markets
Market context
Shanghai has entered its warm, humid late-June phase, with seasonal norms at Pudong putting daytime highs around the low- to mid-20s Celsius and sunny days capable of reaching the low 30s. Recent forecast ranges for the airport point to highs near the upper 20s to low 30s, while June rainfall is typically frequent enough to cap extremes on many days.[2][6][7]
That is why a 0% crowd-implied yes looks conservative only if the market is expecting a very specific threshold rather than a broad warm-day outcome. June at Pudong is usually warm but not uniformly hot: climatology shows average June highs around 27°C, yet rare spikes into the high 30s have been observed in late June in recent years, including 38°C on 27 June 2025. At the same time, wetter, cloudier periods tend to keep highs in the 25–30°C band, which is the more common comparison set for reading this contract.[1][2][4]
For the next few hours, the key catalyst is the live airport reading rather than any policy or schedule event. Traders should watch the morning-to-afternoon temperature rise, cloud cover, and any rainfall that develops over Pudong, because the market resolves on the day’s highest recorded temperature at Shanghai Pudong International Airport Station by noon UTC. Recent airport forecasts already show unsettled conditions with rain risk and temperatures that could still print well above the lower bins if sunshine breaks through.[1][8]
Methodology
This page reviews Highest temperature in Shanghai on June 22? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Prediction Today — the application we operate, where you trade directly against the Polymarket order book at 0% fees.
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
- Is this market available outside the US?
- Prediction Today is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.
- 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?
- Not under $1,500 of lifetime trading volume. Above that threshold, Prediction Today triggers a quick verification flow that finishes in minutes.
- 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.
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