Highest temperature in Shanghai on July 17?

Platform comparison

Market context

Shanghai faces another peak of summer heat as meteorologists monitor conditions at Pudong International Airport for the highest temperature recorded on 17 July 2026. The market currently assigns a 0% probability to the YES outcome, suggesting traders believe the temperature will fall outside the specific range being queried, despite the city’s typical July highs often exceeding 35°C.

Historical data for mid-July in Shanghai shows consistent scorching conditions, with average maximums hovering between 33°C and 38°C, while extreme days frequently reach 39°C or higher. Recent years have seen temperatures climb to 40°C during heatwaves, making a 38°C or 39°C reading statistically probable. The market’s 0% YES probability appears misaligned with these patterns, as Polymarket data indicates a 64% chance for 38°C and 26% for 39°C, suggesting the current crowd-implied probability may reflect a narrow definition of the YES range rather than a lack of heat [1].

Traders should watch real-time updates from AccuWeather and Wunderground, which serve as the official resolution sources, for any sudden shifts in cloud cover or humidity that could suppress temperatures below the threshold. While no political debates or campaign disclosures influence weather, scheduled heat advisories from local authorities could signal extreme conditions. AccuWeather currently reports overcast skies at 82°F (approximately 28°C) at Pudong, but this early morning reading does not preclude a significant daytime rise [2]. The key catalyst remains the daily maximum temperature recorded by Wunderground, which will determine the market’s final resolution.

Sources: 1 · 2 · 3

Methodology

This page tracks Highest temperature in Shanghai on July 17? 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 Election Predictions UK 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.

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 Election Predictions UK route into the same order book at 0% fees.

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.

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.