Highest temperature in Sao Paulo on July 23?

Platform comparison

Market context

São Paulo’s July weather is usually cool rather than hot, with typical daytime highs around **23°C** and average lows near **12–13°C**. That seasonal baseline matters here because the market settles on the **single highest temperature** recorded at Guarulhos airport on the day, so even a modest warm-up above the norm can move the outcome across ranges quickly.[1][2]

The current **0% YES** crowd price suggests traders see the specific range on offer as very unlikely, but that should be read against the settlement mechanics rather than as a forecast of the city’s weather. In markets with discrete outcome bands, public pricing often stays pinned at extremes when one bucket is seen as implausible, much as jury/televote splits or preferential ballots can produce sharp mismatches between headline sentiment and the final result; here, the equivalent question is whether the airport’s peak reading lands in the targeted band before the noon UTC cut-off.[1][2]

For traders, the main catalysts are the **daytime heating curve**, any local cloud or shower cover, and the exact timing of the airport station’s peak temperature within the resolution window. Guarulhos can warm differently from the city centre, so the relevant watchpoints are the station’s hourly updates and any late-morning surge before the market stops accepting observations at 12:00 UTC.[1][2]

Sources: 1 · 2

Methodology

Entertainment-specific comparison page for Highest temperature in Sao Paulo on July 23?. 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

When do award markets resolve?

After the official announcement — e.g. Oscars ceremony end for Academy Awards markets, Eurovision final end for ESC markets. UMA Optimistic Oracle typically uses the official award website as the resolution source.

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.

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.

Is entertainment trading worth the effort?

Niche, but lucrative for experts. Award markets have fewer informed traders than political markets; combining industry expertise (film, music) with active research often surfaces mispricings. Volume cap: large bets move the market.