Home / Prediction Markets / Science / Shanghai May 2 High Hits Twenty-Four Celsius: Market Settled Shanghai May 2 High Hits Twenty-Four Celsius: Market Settled View on Polymarket → Share SR Sofia Renard Climate & Science Analyst Market Resolved Embed NEW Embed this market Full Compact Copy Published May 2, 2026 6 min read Resolution Verdict YES Market Resolved Market has ended. Final implied probability: 100%. Resolved Volume $124.5K $94.6K in 24h Liquidity $1.2M Deep liquidity Time Left Ended Resolves May 2 124K Vol. Ended 1H 6H 1D 1W 1M ALL Select lines to display 24°C $20K Vol. 100% Yes 100¢ No 0¢ 18°C or below $3K Vol. 0% Yes 0¢ No 100¢ 19°C $2K Vol. 0% Yes 0¢ No 100¢ 20°C $6K Vol. 0% Yes 0¢ No 100¢ 21°C $11K Vol. 0% Yes 0¢ No 100¢ 22°C $13K Vol. 0% Yes 0¢ No 100¢ The market on Shanghai’s highest temperature for May 2 is not a prediction anymore. It is a confirmed outcome. The 24°C outcome contract sits at 1.00, meaning traders have fully priced this as resolved. The data and the price are the same number right now. Here’s what the measurements are telling us: Shanghai recorded a peak of 24°C on May 2, 2026. The market opened the day at 0.35 and surged in two distinct waves on May 1 and again in the early hours of May 2 as observational data aligned with forecasts. The trend score of 64.60, combined with a 24-hour price move of plus 63.5%, tells one story. Traders with access to real-time meteorological feeds moved fast and moved decisively. How the Twenty-Four Celsius Contract Works This contract resolves YES if Shanghai’s official highest temperature on May 2, 2026 reaches exactly 24°C. Resolution follows verified meteorological reporting for the Shanghai area. The contract closes at 2026-05-02 12:00:00. At a price of 1.00, the market has already concluded that 24°C is the confirmed outcome. YES (24°C): Price 1.00, implied probability 100%.NO (any other temperature): Price 0.00, implied probability 0%. A NO payout would require Shanghai’s official peak temperature to land on any other outcome bin: 23°C, 25°C, 26°C, or any other listed bracket. At this point, observational data has closed that window. The meteorological record for May 2 is effectively set. Sponsored Partner Momentum and Market Signals: A Convergence, Not a Debate The momentum composite here is not ambiguous. A plus 63.5% move in 24 hours, a trend score of 64.60, and a flat 1-hour change of plus 0.0% are three readings pointing at the same thing: the market reached certainty and stopped moving. When price hits 1.00 and volume dries up, that is what resolution looks like before the official close. Total market volume reached $115,054, with $101,381 of that trading in the last 24 hours. Liquidity sits at $17,762. That late-session volume surge is the fingerprint of traders who saw confirmed or near-confirmed temperature data and moved the 24°C contract from 0.35 to 1.00 in under two days. The market is pricing certainty, not science, at this point. The 24-hour volume of $101,381 against a 30-day opening price of 0.35 shows this contract spent most of its life pricing genuine uncertainty before collapsing to consensus.The 1-hour change of plus 0.0% confirms the market has stopped repricing. No new information is moving this contract.Liquidity at $17,762 is thin. On an unresolved contract, thin liquidity means sharp moves on new data. Here, the data has already arrived.Trader sentiment reads 100% YES and 0% NO, which matches a contract at 1.00 exactly. Lines Analysis: What the Shanghai Data Shows Shanghai’s May 2 temperature outcome landed in the 24°C bracket. That is the signal the market followed. Early May in Shanghai sits in the transition window between the cool Yangtze Delta spring and the humid heat that builds through June. A peak of 24°C is firmly consistent with historical May 2 averages for the city, which typically range between 20°C and 26°C depending on synoptic conditions. The data doesn’t care about the politics of which bracket traders favored earlier in the week. The competing brackets, particularly 25°C and 26°C, would have required a stronger southerly flow or an earlier-than-usual incursion of subtropical air. Neither materialized at the level needed to push the mercury another degree. The 23°C bracket would have required cooler, cloudier conditions that also did not develop. The 24°C outcome sits exactly where the regional forecast models pointed once the synoptic pattern for May 2 became clear on May 1. Shanghai Meteorological Service data for May 2 will serve as the authoritative resolution source for this contract.A shift in the East Asian pressure pattern toward a stronger continental high would have pushed the reading toward 22°C or 23°C. That did not happen.A deeper southerly maritime incursion would have moved the outcome toward 25°C or 26°C. Regional surface analysis did not support that scenario on May 2.Any late correction to official station data before the 2026-05-02 12:00:00 resolution timestamp remains the only technical pathway to a price shift. The $115,054 in total volume, concentrated almost entirely in the final 24 hours, reflects a market that spent weeks pricing a range of outcomes and then snapped to certainty once real-time data arrived. The data favors the current 1.00 price without qualification. LINES VERDICT CONFIRMED: TWENTY-FOUR CELSIUS Shanghai’s May 2 peak temperature landed at 24°C. The market recognized the outcome before official close and priced it accordingly, moving from 0.35 to 1.00 in under 48 hours as meteorological data aligned with the forecast. What the market says: The 24°C contract is priced at 100%, meaning traders have reached full consensus on the outcome. The 2026-05-02 12:00:00 resolution timestamp is the final formality. Any last-minute volatility would require an official data correction, which is not a realistic expectation at this stage. Key unknown: The only remaining variable is whether the Shanghai Meteorological Service issues any revision to the official station reading before the resolution timestamp. No revision signals are present in current reporting. Scientific Context: Early May Temperatures in Shanghai Shanghai’s climate in early May is governed by the retreating Siberian high and the northward advance of the Western Pacific subtropical ridge. Average daily highs for May 2 historically cluster between 21°C and 25°C, with the median near 23°C. A reading of 24°C falls within one standard deviation of the long-term mean for this date. The outcome is unremarkable from a climatological standpoint, which is exactly why the market, once it had real-time data, moved to certainty without hesitation. The market was pricing uncertainty for weeks, not science. Once the science arrived, the price followed immediately. Frequently Asked Questions What does a 100% probability mean here? The 24°C outcome contract is priced at 1.00, meaning traders assign zero probability to any other temperature bracket resolving as the winner. This reflects near-certain confirmation of the outcome before official close.What would a NO outcome require? The NO position on 24°C would pay out if Shanghai’s official peak temperature on May 2 resolved in any other bracket, such as 23°C or 25°C. Current market pricing treats that probability as zero.What data event would move this price? Only an official correction or revision from the Shanghai Meteorological Service before the 2026-05-02 12:00:00 resolution timestamp would reprice this contract. No such correction is indicated.When does this contract resolve? The resolution timestamp is 2026-05-02 12:00:00. The Shanghai Meteorological Service’s official daily maximum temperature reading for May 2 determines the outcome.Is the volume reliable for assessing conviction? Total volume reached $115,054, with $101,381 trading in the final 24 hours. Liquidity at $17,762 is relatively thin, but the directional signal is unambiguous given the 100% YES consensus and the 1.00 price. This analysis reflects market conditions as of 2026-05-02 02:10:21. Prediction market probabilities are volatile and shift as new data and regulatory decisions emerge, especially as the 2026-05-02 12:00:00 resolution date approaches. Lines.com does not accept bets or provide financial or gambling advice. All market outcomes are uncertain. Market Resolved Outcome: YES Final Price 100% Settled May 2, 2026 Duration 2 days Resolution Analysis Confirmation Holds to Close Shanghai Meteorological Service confirms the official May 2 daily maximum at 24°C with no revision before the 2026-05-02 12:00:00 resolution timestamp. The contract closes at 1.00. Every trader holding the 24°C YES position collects the full payout. This is the scenario the market has fully priced. Station Data Revision Surfaces A quality-control review at the Shanghai Meteorological Service identifies an instrument error or data transmission issue and revises the official May 2 maximum to 23°C or 25°C before resolution. The 24°C contract would immediately drop from 1.00. The probability of this scenario is treated as effectively zero by current market pricing. Adjacent Bracket Gains Ground If official data revision pushes the reading to 25°C, the 25°C bracket contract would surge from 0.00 toward 1.00. Traders holding that bracket would gain full payout. This outcome requires a formal correction from the meteorological authority before the resolution timestamp, which no current signal supports. Resolution Source Dispute Delays Close A disagreement between data providers about which Shanghai station or dataset constitutes the authoritative reading could delay or complicate resolution. If two credible sources report different peak temperatures, market operators would need to adjudicate before the 2026-05-02 12:00:00 close. This would introduce brief but sharp price volatility across all temperature brackets. Key macro factor: Shanghai's early May temperature regime is influenced by the seasonal retreat of the Siberian high and the northward shift of the Western Pacific subtropical ridge, placing May 2 readings in a climatologically predictable range of 21°C to 25°C. Market Timeline Apr 30, 2026, 4:04 AM Market Created Apr 30, 2026, 4:45 AM Event Start Apr 30, 2026, 4:50 AM Market Opened May 2, 2026 Market Resolution Related Prediction Markets Moving Now Highest temperature in NYC on July 21? 82-83°F 100% Yes No 71°F or below 0% Yes No Read Article Moving Now Highest temperature in Milan on July 21? 30°C 100% Yes No 24°C or below 0% Yes No Read Article Moving Now Highest temperature in Hong Kong on July 21? 30°C 100% Yes No 25°C or below 0% Yes No Read Article Moving Now Highest temperature in London on July 21? 22°C 100% Yes No 19°C or below 0% Yes No Read Article Moving Now Highest temperature in Beijing on July 22? 28°C 59% Yes No 29°C 27% Yes No Read Article Moving Now Highest temperature in Wuhan on July 22? 30°C 35% Yes No 31°C 32% Yes No Read Article Moving Now Two SpaceX Starships dock together by…? 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