Highest temperature in Shanghai on July 2?

Platform comparison

Market context

Shanghai’s summer heat is a defining feature of the region, with July consistently delivering the highest temperatures of the year. On 2 July 2026, the market assesses whether the peak temperature at Pudong International Airport will exceed 28°C. Current crowd-implied probability sits at 0% YES, suggesting traders believe the day will remain below this threshold despite seasonal norms.

Historical data frames this low probability as unusual. July is Shanghai’s hottest month, averaging highs of 87°F (30.6°C), and summer peaks regularly surpass 30°C, reaching 35°C under clear skies[3][5]. Polymarket ensemble forecasts from regional models indicate 27–28°C as the most likely peak for this date, contradicting the 0% market stance[7]. This divergence suggests the market may be leaning on a specific short-term forecast rather than long-term climatology.

Traders should monitor real-time updates from Wunderground, the official resolution source, and watch for sudden shifts in regional weather models that could alter the peak temperature[4]. No scheduled political debates or campaign-finance disclosures are expected to influence weather outcomes, but any unexpected cloud cover or rain events before midday could suppress temperatures below 28°C. The market’s current stance appears to hinge on a transient forecast anomaly rather than a structural shift in Shanghai’s summer climate.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Highest temperature in Shanghai on July 2? 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

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

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.

Can prediction markets influence election outcomes?

Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Trump Prediction route into the same order book at 0% fees.

Why do Polymarket and Kalshi differ on elections?

Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.