Highest temperature in Chongqing on July 17?

Platform comparison

Market context

Chongqing’s Jiangbei International Airport is set to record its peak daily temperature on 17 July 2026, with the market now locking in 34°C as the definitive outcome at 100% probability. The 0% YES crowd-implied probability for alternative ranges reflects a near-total consensus among traders that the city will hit this specific threshold, aligning with its reputation as one of China’s hottest urban centres during mid-summer. Programmatically, a power-user would treat this as a settled event, deploying conditional orders to capture the spread rather than speculate on volatility.

Historically, Chongqing regularly exceeds 34°C in July, with records reaching 40°C in 2022 and 38°C in 2023, making the current 100% assignment to 34°C a conservative but statistically grounded position. The 0% probability for lower ranges mirrors the region’s consistent heatwave patterns, where temperatures rarely dip below 33°C during this period. For algorithmic traders, this historical baseline justifies treating the market as a low-risk utility play, with copy-trading bots likely mirroring the frontrunner position without hesitation.

Traders should monitor Wunderground’s real-time feed for the Jiangbei station, as the settlement source depends entirely on this data stream. No external catalysts like policy announcements or weather forecasts will alter the outcome, given the market’s reliance on observed historical data rather than predictive models. A recent report from China Meteorological Administration confirms July 2026 is tracking above average for heat intensity in the Yangtze River region, reinforcing the 34°C lock-in [1]. The settlement window closes at 12:00 UTC on 17 July, leaving no room for late adjustments.

Sources: 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

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

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 Review UK. 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.

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 Review UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.