Highest temperature in Shanghai on June 27?

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Market context

The real-world event driving this market is the daily peak temperature recorded at Shanghai Pudong International Airport on 27 June 2026, measured in degrees Celsius. Historical data for June at this location shows average highs between 27°C and 30°C, with daily peaks rarely falling below 25°C even on cloudy or rainy days[1][6]. The current crowd-implied probability of 0% for a specific temperature range suggests traders are betting against that range occurring, yet comparable cases from recent years indicate that temperatures in this window are statistically common during the humid, rainy season, making the zero probability an outlier that warrants scrutiny[5][7].

Traders should monitor the scheduled release of hourly meteorological updates from Wunderground and any sudden shifts in regional cloud cover or precipitation forecasts, as these directly influence peak temperatures[2]. A recent forecast from AccuWeather indicates daily highs for late June 2026 ranging from 30°C to 32°C, which frames the catalysts for this market as dependent on short-term atmospheric stability rather than long-term trends[2]. Regulatory accessibility also plays a role: under German GlüStV and US CFTC frameworks, markets offering "no-KYC up to $1,500" remain accessible to a broader retail base, though compliance with tax and KYC obligations may still apply depending on jurisdiction[1]. This specific market’s low barrier to entry means liquidity could be volatile if regulatory announcements alter the "no-KYC" threshold.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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?

On Polymarket KYC UK, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket KYC UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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.

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?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket KYC UK triggers a quick verification flow that finishes in minutes.