Highest temperature in Shanghai on July 7?

Platform comparison

Market context

The underlying event is the peak temperature recorded at Shanghai Pudong International Airport on 7 July 2026, with current crowd-implied probability of 0% for a YES outcome in the highest range. Historical data shows July highs at this station typically climb from 84°F to 88°F (29°C to 31°C), rarely dipping below 75°F (24°C) or exceeding 95°F (35°C), though extreme years can reach 40°C (104°F) [1][4]. Trader consensus on Polymarket currently centres on 34–35°C as the most probable peak, with 36°C holding 36% probability and 35°C at 27%, suggesting the market leans toward moderate heat rather than record extremes [2].

Traders should monitor real-time weather feeds from Wunderground and local meteorological updates, as sudden shifts in humidity or cloud cover could alter the day’s peak. The market is leaning on the catalyst of unseasonal heatwaves, which have been flagged in recent climate reports for East Asia, though no scheduled political debates or campaign-finance disclosures directly influence this weather outcome [5]. While July 2025 saw a peak of 38°C at 3 PM, current conditions remain clear with temperatures around 81°F (27°C) at 4 AM, indicating a stable start to the day [5][7]. No major political events are tied to this weather metric, so the primary driver remains atmospheric variability rather than policy announcements.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Highest temperature in Shanghai on July 7? plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

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.

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.

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.