Highest temperature in Shanghai on August 4?

Platform comparison

Market context

Shanghai’s heat on 4 August is the real-world driver here: the market settles on the day’s *highest* temperature at Shanghai Pudong International Airport Station, not a citywide average or the early morning reading. With the settlement window closing at 12:00 UTC, the key question is whether the day’s peak will land in the airport station’s usual August range or break higher in a late-afternoon spike. AccuWeather’s August outlook for Shanghai points to daily highs between 82°F and 92°F, while other August guides describe persistent heat, humidity and frequent rain, which can cap extremes even when the broader air mass is hot.[1][7][8]

The crowd’s 0% YES implies the market is pricing in an outcome that is either well outside the quoted temperature bands or effectively treated as unreachable under the current setup. In comparable weather and results-based markets, the separating line is often whether the settlement source uses the most extreme reading of the day rather than the forecast headline, which makes intraday volatility more important than the morning forecast. That creates a public-vs-source split similar to voting mechanics in entertainment markets: the headline expectation can look one way, but the official tally is what counts, and the settlement source here is narrowly defined to Shanghai Pudong International Airport Station on Wunderground.[1][7]

For traders, the main catalysts are the live Wunderground observation feed, the timing of the day’s warmest hours, and any last-minute forecast revisions as the afternoon maximum approaches. Forecast pages currently show Shanghai around the low-to-mid 30s Celsius for 4 August, with some services indicating 34°C and others a lower high, so the market can still move if cloud cover, rainfall or a cooler maritime flow changes the peak reading.[2][3][15] A tropical-system or rain-band update would matter more than generic monthly climatology, because the settlement depends on the single highest station observation rather than the broader daily weather narrative.[7][13]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Entertainment-specific comparison page for Highest temperature in Shanghai on August 4?. Polymarket's live quote (Polygon order book) shows the award probability. For awards markets, Polymarket usually has the deepest liquidity; Betfair runs comparable markets for Oscars/Emmys; Manifold for Eurovision.

Resolution & payout

Entertainment markets settle on official award ceremony or show end. Polymarket uses UMA Optimistic Oracle with a source URL to the official award website. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

Which entertainment markets are available?

Oscars / Academy Awards (Best Picture, Best Director, Best Actor/Actress), Eurovision Song Contest, Emmy Awards, Grammy Awards, Golden Globes, plus reality-TV outcomes (Bachelor, Survivor). Volume usually sits in the five- to six-figure range per market.

How accurate are award predictions?

Variable. Industry-predictable awards (Oscar Best Picture) have high market accuracy (Brier ~0.15). Reality-TV outcomes with small markets carry more noise. Eurovision is notorious for market upsets due to bloc voting.

What was the top Oscar 2025 market?

Best Picture, with ~$2.8M volume on Polymarket. "Anora" started as an underdog at ~8% and closed at ~62% before the ceremony — the biggest single Oscar market swing since 2019.

Who can trade Eurovision markets?

Polymarket is globally accessible but geo-blocked in select jurisdictions — traders there use broker frontends with a different geo footprint to reach the order book. Eurovision markets have strong European liquidity; German/Austrian/Swiss flow often drives consensus.

How are reality-TV outcomes verified?

UMA Oracle uses the official show website or producer statement as the resolution source. Very narrowly defined markets (e.g. "Will X be voted off the island?") rely on the official show notes.