Highest temperature in Shanghai on July 3?

Platform comparison

Market context

On 3 July 2026, the Shanghai Pudong International Airport Station will record its peak daily temperature, which the market will resolve against specific Celsius ranges. Despite the crowd-implied probability of 0% for a "YES" outcome on the highest range, historical data suggests this figure is likely an anomaly. In July, Shanghai typically experiences highs between 26–31°C, with peaks reaching 38°C in 2025[2]. While 03.07 is statistically the coldest early-July date at 24.3°C, seasonal norms and recent trends favour warmer outcomes, with 29°C sitting at 31.5% probability in parallel markets[4][7]. The 42% frontrunner for 31°C further indicates that the market leans heavily on warmer scenarios rather than the current 0% signal[1].

Traders should monitor immediate weather forecasts and any sudden shifts in atmospheric conditions, as moderate rain is predicted for the coming days, which could suppress temperatures[9]. The primary catalyst is the real-time Wunderground data release, which will confirm the highest temperature recorded at any time on this day[2]. No scheduled political debates or campaign-finance disclosures directly influence this weather event, but the market is leaning on the forecast data indicating a warm maximum of 30°C[9]. Investors must watch for updates from the National Weather Service regarding the ZSPD station, as current readings show temperatures hovering around 25–26°C in the early morning hours[3]. The resolution depends entirely on the final daily peak, making short-term forecast adjustments the critical variable for price movement.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Highest temperature in Shanghai on July 3? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Trump Prediction provide a 0%-fee route into the same order book.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

FAQ

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

Are political prediction markets legal in my country?

It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.