Highest temperature in Chongqing on July 27?

Platform comparison

Market context

Chongqing’s highest temperature on 27 July will come from the Jiangbei airport station reading, and the market is currently pricing the event with 0% implied probability for **YES** in the target range, which leaves the obvious favourite on the board at the hotter end of the distribution. Public market pricing elsewhere is already clustered around **39°C** as the lead outcome, with **38°C** next in line, so the consensus is clearly leaning to another very hot afternoon rather than an outlier cool day.[3] In handicapper terms, the crowd is treating the upper-30s as the baseline and anything materially below that as an underdog result. July in Chongqing is normally hot and humid, with average highs around **33°C**, but the city also sits in a rainy season that runs from May to September, which matters because cloud, showers and thunderstorms can cap the day’s maximum if they arrive early enough.[1][2]

The main catalysts are the timing and intensity of afternoon convection, plus whether any storm line builds before the daily high is set at the airport station. Travel guidance for July points to frequent rain and several heavy thunderstorms through the month, which creates some value for contrarian positions on lower temperature bands if cloud cover or rain develops during the peak heating window.[1] The key dependency is not a formal announcement but the evolving weather pattern: a late-morning clear spell favours the market favourite near the top bands, while earlier showers would shift value towards the underdog cooler outcomes. Traders should watch the airport station’s reported hourly temperatures and any forecast updates from the official weather services used by the settlement source, because the final print is a single-station maximum rather than a city-wide average.

Sources: 1 · 2 · 3

Methodology

We track Highest temperature in Chongqing on July 27? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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

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 Who Will Win. 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.

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.

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.