Highest temperature in Shanghai on July 9?

Platform comparison

Market context

The underlying event is the peak daytime heat recorded at Shanghai Pudong International Airport on 9 July 2026, where meteorological norms dictate temperatures routinely exceed 30°C. Current crowd-implied probability of 0% for a "YES" outcome (likely meaning below a specific threshold) contradicts historical data, as July in Shanghai is consistently hot, rainy, and humid with daytime highs hovering between 30°C and 38°C [3]. Past comparable cases show that extreme highs in this month can even reach 40°C, making a low-temperature scenario statistically improbable [3]. Market data from Polymarket reinforces this, with 30°C as the frontrunner at 36% probability and 31°C at 22%, indicating traders expect significant heat rather than cool conditions [1].

Traders should monitor real-time meteorological updates from Wunderground and daily forecast adjustments from AccuWeather, which currently project daily highs ranging from 86°F to 97°F (30°C to 36°C) for the airport station [5]. While no specific political debates or campaign-finance disclosures directly influence weather, the market leans heavily on the catalyst of seasonal climate patterns rather than external human events. Recent travel guides advise that peak heat occurs between 11:00 AM and 5:00 PM, with temperatures often peaking around 3 PM, a dependency that must be watched as the settlement window approaches [4]. The absence of political catalysts means the price movement will rely entirely on the convergence of forecast models with actual atmospheric conditions recorded on the day.

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 9? 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

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.

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.

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.