Highest temperature in Shanghai on June 29?

Platform comparison

Market context

The underlying event is the highest temperature recorded at Shanghai Pudong International Airport on 29 June 2026, measured in degrees Celsius. Historical data for June at this station shows daily highs typically rising from 77°F to 83°F (25°C to 28°C), rarely dipping below 69°F (21°C) or exceeding 92°F (33°C) [1]. Summer conditions in Shanghai regularly surpass 30°C, with peaks reaching 35°C during intense sunshine [5]. Given that the current crowd-implied probability for a specific high-temperature range is 0% YES, the market likely leans on the expectation that temperatures will remain within the standard June band, avoiding extreme outliers that would trigger a resolution in a higher bracket.

Traders should monitor real-time weather updates from Wunderground, the official resolution source, for any sudden shifts in cloud cover, precipitation, or wind speed that could alter the peak temperature [1]. While no political debates or campaign-finance disclosures directly influence weather, scheduled meteorological announcements or unexpected storm warnings from local authorities could act as catalysts for price movement [2]. The market is leaning on the immediate weather forecast, which currently predicts light rain and a gentle breeze for 29 June, with temperatures around 29°C [2]. This damp, cloudy condition supports the low probability of an extreme high, making the weather forecast itself the primary catalyst rather than any political event.

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 June 29? 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.

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.