Highest temperature in Shanghai on August 9?

Platform comparison

Market context

Shanghai Pudong International Airport is set up for a wet, windy Sunday, and that matters because this market settles on the **single highest Celsius reading** in Weather Underground’s Daily Observations table, not the broader day-summary high. Forecasts for 9 August point to around **27–29°C** with heavy rain, strong north-easterly winds and very high precipitation probabilities, which is a clear step down from the hotter early-August pattern and makes an upper-20s outcome the base case rather than a mid-30s spike.[2][3][6]

The 0% implied probability looks most useful as a signal of market pricing, not of the weather itself: Shanghai’s August climatology still supports occasional hot surges, with typical highs around the low-30s Celsius and some forecasts for this month reaching the mid-30s.[1][10][13] But comparable August readings show that once rain bands and cloud cover build in, the day’s peak can be pinned close to the morning and early-afternoon range rather than the monthly extreme, so the key question is whether any short-lived clearing arrives before the worst of the rain.[2][3][18]

Traders should watch the final pre-settlement forecast updates and, more importantly, the actual Daily Observations feed from Shanghai Pudong International Airport as the day unfolds, because that source controls resolution if it diverges from the headline summary.[14] The main catalyst is timing: if rain and thunderstorms arrive early, the day’s high is likely to print quickly and then stall; if the heaviest rain slips later, there is still room for a brief warm-up into the high-20s or low-30s Celsius.[2][5][6]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Football-specific comparison page for Highest temperature in Shanghai on August 9?. 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 (US-focused) or Manifold (play-money).

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.