Highest temperature in Chengdu on July 27?

Platform comparison

Market context

Chengdu’s temperature on 27 July will be set by the **highest reading** at Chengdu Shuangliu International Airport Station, so traders need to track the day’s peak rather than the afternoon forecast headline. Early market pricing at **0% YES** suggests the crowd is treating a high-end temperature outcome as effectively offside, but July in Chengdu is typically hot and humid, with published July averages around **30°C** for highs and humidity near **80%**.[4]

That framing matters for programmatic trading because the settlement source is a single station page on Wunderground, not a citywide average or a forecast feed. A bot or conditional-order workflow would usually watch updated intraday observations, compare them with the temperature bands used by the market, and only lean in if the live station maximum starts moving towards a higher bracket. Historical-style July guides for Chengdu also note that rain is frequent, which can cap extremes even when the day begins warm.[4][7]

For catalysts, the key inputs are the hourly evolution of cloud cover, showers, and wind at the airport station, plus any late shifts in local convection that can suppress or lift the day’s maximum. Current weather services already show a warm, unsettled setup for Chengdu, with one forecast calling for **37°C** and showers, while another points to around **24°C** at present, underlining how quickly the realised high can diverge from a static forecast.[1][2][5]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Chengdu on July 27? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Bot UK, which mirrors the Polymarket order book at 0% fees.

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

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Bot UK 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.