Highest temperature in Shanghai on July 14?

Platform comparison

Market context

On 14 July 2026, Shanghai will record its highest daily temperature at Pudong International Airport Station, measured in Celsius. The market currently prices this outcome at 0% YES across all temperature bands, reflecting the settlement window's closure at midday UTC—roughly 8 p.m. local Shanghai time. Traders holding USDC on Polygon can exit positions immediately after the actual high is published on Wunderground, though the conditional token mechanics mean early settlement is unlikely given the tight window between market close and data availability.

Shanghai's July climate is consistently hot and humid, with historical highs typically ranging between 32°C and 37°C during mid-summer. The city's 30-year average for mid-July peaks around 32–33°C, though extremes have reached 39°C in particularly intense heatwaves. The 0% probability across all bands suggests traders are either awaiting fresh meteorological forecasts before committing capital or treating this as a placeholder market pending weather model updates closer to the settlement date.

The key catalyst will be seasonal weather patterns emerging in late June and early July 2026. China's meteorological authority and international models (GFS, ECMWF) typically provide reliable 10–14 day forecasts by early July, which traders should monitor for signals of high-pressure systems or tropical moisture patterns that could drive temperatures toward the upper or lower end of the historical range. Any significant heatwave warnings issued by Shanghai's weather bureau in the week preceding 14 July would likely shift market pricing materially.

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

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 PolyGram 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.