Highest temperature in Chengdu on July 16?

Platform comparison

Market context

Chengdu will experience its peak heat for 16 July 2026 at the Chengdu Shuangliu International Airport Station, with the market resolving to the Celsius range containing that highest reading. On Polymarket today, the contract trades with a 0% implied probability for the YES outcome, suggesting the crowd believes the specific temperature range in question is virtually impossible given current meteorological expectations.

Historically, mid-July in Chengdu sees highs frequently exceeding 35°C, often reaching 38–40°C during heatwaves, making a 0% probability for any reasonable upper range statistically anomalous unless the range is implausibly low. Comparable cases from 2023 and 2024 show consistent summer peaks above 36°C at ZUUU, indicating the current pricing may reflect a mispriced conditional token rather than genuine climatic uncertainty.

Traders should monitor the daily Wunderground history feed for ZUUU as the settlement clock ticks toward 2026-07-16T12:00:00Z, watching for real-time updates that could shift USDC liquidity on Polygon. No official weather announcements are scheduled before settlement, but sudden shifts in regional humidity or cloud cover could alter the peak temperature; recent forecasts from the China Meteorological Administration highlight stable high-pressure systems over Sichuan, which typically sustain elevated temperatures through mid-July [1].

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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 Polymarket Scam?. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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 Polymarket Scam? 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.