Highest temperature in Shanghai on June 23?

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Market context

The underlying event is the peak daytime heat recorded at Shanghai Pudong International Airport on 23 June 2026, measured in degrees Celsius. Current market pricing implies a near-zero chance of the temperature falling into the highest expected range, suggesting traders anticipate conditions well below that threshold.

Historical data frames this low probability as plausible, given Shanghai’s June climate typically sees daily highs averaging 26°C (79°F), with the hot season only beginning mid-June [2][5]. While forecasts for June 2026 suggest highs could reach 96°F (35.5°C), recent June 2025 records show significantly cooler conditions, with temperatures dipping to 55°F (12.8°C) [4]. The 0% YES price aligns with the possibility of a cooler, rainier day, as early morning readings on 23 June 2026 already show light showers and temperatures near 23°C [1].

Traders should monitor official weather updates from Wunderground, the designated resolution source, for real-time temperature spikes or sudden cloud cover that could suppress peak heat [8]. No scheduled political debates or campaign-finance disclosures directly influence this weather event, but regional monsoon declarations or emergency heat advisories could act as catalysts. The market leans on the Wunderground data stream as its primary catalyst, with no external political events expected to alter the outcome [8]. Recent forecasts from AccuWeather indicate a wide temperature range, but the lack of confirmed heatwaves supports the current low probability stance [3].

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 23? 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

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

Where can I trade this market with the lowest fees?

On Trump Prediction, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Trump Prediction is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.