Highest temperature in Chicago on July 15?

Platform comparison

Market context

Chicago O’Hare recorded its peak July 15 temperature at 94–95°F last year, aligning with the current market frontrunner that assigns a 47% probability to this range[1]. Historical data from the past decade shows mid-July highs in Chicago typically cluster between 92°F and 97°F, with 96–97°F holding a 35% implied probability as the next most likely outcome[1]. The crowd-implied 0% probability for any outcome below 90°F reflects the region’s consistent summer heat, where temperatures rarely dip below this threshold during peak July weeks.

Traders should monitor the National Weather Service’s seven-day forecast for Chicago, which updates daily and often signals shifts in high-pressure systems that drive temperature spikes. A recent AccuWeather report notes current conditions at O’Hare are sunny with 82°F and 50% humidity, suggesting stable atmospheric patterns that could sustain high temperatures through mid-July[2]. Key dependencies include the timing of any incoming frontal systems and humidity levels, as elevated moisture can amplify heat retention. Watch for official temperature announcements from Wunderground on July 15, the designated resolution source for this market[1].

Sources: 1 · 2

Methodology

Sports-specific comparison page for Highest temperature in Chicago on July 15?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.

Resolution & payout

Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

Are prediction markets better than sports betting?

Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.

When do sports markets resolve?

Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.

Which sports markets are available?

Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.

How fast do sports winnings settle?

Once the official league outcome is logged in the UMA Oracle (typically 1-2 hours after the final whistle), Polymarket's smart contract triggers USDC payout. To your wallet within minutes.

What's the difference between match odds and outright odds?

Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.