Highest temperature in Chicago on July 27?

Platform comparison

Market context

Chicago's highest temperature on 27 July 2026 will be measured at O'Hare International Airport and resolved against historical weather records. The settlement window closes at midday UTC, meaning the final reading must be confirmed before the market locks. Wunderground's historical database serves as the sole arbiter, with temperature data pulled directly from the airport's official meteorological station.

July in Chicago typically peaks between 82–88°F, though heat waves can push readings into the low 90s. The current 0% probability on higher temperature brackets suggests traders are pricing in either a cooler-than-average day or uncertainty about which specific range will verify. Historical precedent matters here: Chicago recorded 96°F on 13 July 1995 during the city's infamous heat wave, and more recently hit 91°F on 20 July 2019. These outliers establish that extreme heat is plausible but uncommon for late July. The National Weather Service's seasonal forecasts, typically issued 6–14 days before the event, will be the primary catalyst for probability shifts as traders gain visibility on atmospheric patterns and high-pressure systems tracking toward the Midwest.

The resolution mechanism hinges entirely on Wunderground's historical archive pulling the correct daily maximum from KORD station records. Traders should monitor whether any airport infrastructure changes or sensor recalibrations occur before the settlement date, as these could affect data availability or accuracy. The gear-icon toggle between Fahrenheit and Celsius introduces minimal ambiguity provided traders verify their unit selection before submitting positions.

Methodology

Entertainment-specific comparison page for Highest temperature in Chicago on July 27?. 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.

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.

Are there politics-entertainment crossover markets?

Yes — e.g. "Will X be parodied on SNL?", "Who will host the next Oscars?". These have thinner liquidity but offer alpha for traders who read pop-culture and political worlds together.

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.