Highest temperature in Chengdu on July 17?

Platform comparison

Market context

Chengdu is currently experiencing a rain-cooled day with clouds yielding to sun, pushing today’s high to 30°C (90°F) rather than the peak heat typical of mid-July [1][6]. This immediate drop from the usual 35–39°C range explains the market’s 75% YES probability for a lower temperature bracket, as the blue rainstorm warning has suppressed thermal accumulation so far [2][5]. The real-world event driving this shift is the active precipitation system that has kept humidity high but temperatures moderated, contrasting sharply with the prolonged heatwaves the city often endures for up to 20 consecutive days in this month [2].

Historically, July in Chengdu sees daytime highs hovering between 29 and 37°C, with peak heat hours frequently soaring to 39°C [2]. However, rainy days can dip highs to around 25°C, creating a wide variance that traders must weigh against the current 75% implied probability [2]. The market’s frontrunner outcome of 30°C aligns with today’s actual reading and long-term averages of 30–31°C, suggesting the crowd correctly anticipates continued cloud cover and rain rather than a sudden heat spike [2][7].

Traders should monitor the heat wave forecast starting Saturday, as AccuWeather predicts decreasing clouds today followed by rising temperatures over the next 10 days [6]. The key catalyst is whether the rainstorm warning lifts before the settlement window ends at 12:00 UTC on 17 July, potentially allowing temperatures to climb toward the 35°C+ range seen in dry years [5][6]. Watch for hourly updates showing the transition from overcast to sunny conditions, which could rapidly alter the temperature trajectory before the market resolves [6].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Chengdu on July 17? 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 Prediction Today, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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 Prediction Today. 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.

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.