Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Today) Pick polygram.ink (preferred broker) |
95% | 5% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
95% | 5% | 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 |
|---|---|
| 28°C | 95% |
| 29°C | 4% |
| 30°C or higher | 1% |
| 20°C or below | 0% |
| 21°C | 0% |
| 26°C | 0% |
| 27°C | 0% |
| 22°C | 0% |
| 23°C | 0% |
| 24°C | 0% |
| 25°C | 0% |
Market context
Chongqing’s peak heat on 2 July 2026 is expected to fall well below seasonal norms, with current models pointing to a maximum near 26°C rather than the typical 32–33°C. This sharp deviation stems from a recent shift in short-range forecasts over the past 48 hours, which now predict increased cloud cover, afternoon thunderstorms, and a transient steering pattern that limits solar insolation and promotes evaporative cooling. The crowd-implied 0% probability for higher temperature ranges reflects this consensus that regional factors—high humidity, urban heat island effects, and monsoon-driven cloudiness—will suppress daytime peaks by several degrees.
Historically, early July in Chongqing averages highs of 32–33°C, with extreme days reaching 43–44°C, as seen in past “furnace” summers. However, the current outlook aligns more closely with moderated years where cloud cover and precipitation timing keep temperatures in the 25–27°C band. The tightly clustered 25–27°C outcomes mean even modest shifts in wind or rain could differentiate resolution, making official station data from the Jiangbei International Airport critical for final settlement.
Traders should monitor updates from Wunderground’s daily history feed and watch for announcements on regional weather schedules, particularly any changes to afternoon thunderstorm forecasts or steering pattern shifts. A recent forecast from Travel China Guide confirms that high humidity and urban heat can elevate perceived temperatures to 43°C, but current model runs suggest these effects will be offset by increased cloudiness. Key dependencies include precipitation timing, wind direction, and insolation levels, all of which will determine whether the day stays within the 26°C frontrunner or drifts toward 25°C or 27°C.
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'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.
- 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.
Trade Highest temperature in Chongqing on July 2? on Prediction Today
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