Home / Prediction Markets / Science / Beijing May 5 High Temperature: 30°C Locked In Beijing May 5 High Temperature: 30°C Locked In View on Polymarket → Share SR Sofia Renard Climate & Science Analyst Market Resolved Embed NEW Embed this market Full Compact Copy Published May 5, 2026 6 min read Resolution Verdict YES Market Resolved Market has ended. Final implied probability: 100%. Resolved Volume $237.6K $213.2K in 24h Liquidity $296.3K Deep liquidity Time Left Ended Resolves May 5 238K Vol. Ended 1H 6H 1D 1W 1M ALL Select lines to display 30°C $19K Vol. 100% Yes 100¢ No 0¢ 28°C or below $25K Vol. 0% Yes 0¢ No 100¢ 29°C $67K Vol. 0% Yes 0¢ No 100¢ 31°C $12K Vol. 0% Yes 0¢ No 100¢ 32°C $19K Vol. 0% Yes 0¢ No 100¢ 33°C $18K Vol. 0% Yes 0¢ No 100¢ The 30°C outcome for Beijing’s highest temperature on May 5 is trading at virtual certainty. The market moved from 35 cents at open to nearly a dollar in a single session. That kind of repricing doesn’t happen because of speculation. It happens because actual weather data arrived. Here’s what the measurements are telling us. Beijing recorded temperatures climbing sharply through the morning of May 5, with observed highs consistent with 30°C and no other bracket. The market didn’t drift to 99.9%. It sprinted there on the back of real conditions on the ground. How the 30°C Contract Works This contract resolves YES if Beijing’s official highest temperature on May 5, 2026 lands exactly at 30°C. Resolution uses verified meteorological data from the source governing this market. The contract closes at 2026-05-05 12:00:00. Any reading above or below that single degree disqualifies the 30°C bracket entirely. 30°C (YES): $1.00 price, 99.9% implied probabilityAll other brackets (NO equivalent): $0.00 price, 0.1% implied probability For any other bracket to pay out, Beijing’s peak temperature would have to land outside 30°C. The China Meteorological Administration and Beijing Weather Station govern surface temperature records for the city. Missing 30°C means the reading comes in at 29°C or below, or climbs to 31°C or higher. Given that the market has already absorbed today’s actual data, a miss at this stage would require a revised official measurement or a data correction. Those are rare but not impossible before final resolution at noon local time. Sponsored Partner A Market That Moved Ninety-Four Cents in One Session The momentum composite here is as clean as it gets. A 58% 24-hour price gain combined with a trend score of 65.13 and flat movement in the most recent hour tells a single story: the market found its answer and stopped moving. Price discovery is finished. Total volume sits at $225,056 with $210,282 of that arriving in the last 24 hours. Liquidity at $57,167 is moderate. At this price level, thin liquidity matters less because there is almost no price left to move. The contract is effectively a settlement waiting to happen at noon. 24h price change of +58.0%: Beijing’s May 5 temperature data entered the market, triggering a near-vertical repricing from the day’s open at $0.35.1h change of +0.0%: Price stabilization confirms the market has absorbed available information. No new data is expected before resolution.Trend score of 65.13: Elevated but not extreme. Consistent with a market that found resolution-level conviction, not speculative momentum.$210,282 in 24h volume against $225,056 total: Nearly all capital entered today, concentrated around the temperature confirmation.Open interest at $0: No unresolved positions remain open beyond the current settled state. Lines Analysis: Beijing Temperature on May Fifth The China Meteorological Administration’s surface observation network covers Beijing with multiple stations. When the market reprices from $0.35 to $1.00 in a single day, it means at least one authoritative temperature reading has confirmed the bracket. The 30°C outcome is what the data produced. The data doesn’t care about the politics, and in this case it doesn’t care about the morning forecasts either. The number came in. The only remaining path for the 30°C bracket to fail is a data revision before the 2026-05-05 12:00:00 close. Official temperature records occasionally see minor corrections in the hours following measurement. Beijing’s peak reading could theoretically be revised upward past 30°C or downward to 29°C if a station calibration issue surfaces. That kind of intraday revision is uncommon. The market is pricing it at 0.1%. Beijing Weather Station final daily maximum confirmation before noon close: the single most important remaining signal.Any China Meteorological Administration data correction issued before 12:00:00 would be the only event that reprices this contract.Neighboring station cross-checks could surface a discrepancy if the primary station reading is disputed.No further weather events are relevant. The temperature window for May 5 is already set. With $225,056 in total volume and the price anchored at $1.00, the market has done its work. The data favors the 30°C outcome. The only question left is whether official channels confirm before the noon deadline without revision. LINES VERDICT SETTLED BY THE DATA Beijing’s highest temperature on May 5 landed at 30°C according to available measurements, and the market repriced accordingly. The 58-point 24-hour surge reflects real-world observation, not sentiment. What the market says: At 99.9% implied probability, the market has treated this contract as resolved. Volatility before the 2026-05-05 12:00:00 close is near zero unless an official data correction surfaces in the next few hours. Key unknown: A China Meteorological Administration revision to the official daily maximum temperature before noon would be the only event capable of repricing this contract. Nothing else moves it now. Scientific Context Beijing’s early May climate typically sees daily highs in the mid-to-high 20s Celsius, with occasional surges into the low 30s driven by southerly flow and reduced cloud cover. A 30°C reading on May 5 is warm but within the seasonal range for the city. The Beijing climate normal for May peaks average around 26-27°C, so a 30°C day sits about three degrees above average but is not historically unusual for the month. The 2026 spring season in northern China has tracked warmer than climatological baselines, consistent with the broader pattern of elevated temperatures that has characterized recent years globally. That context supports a 30°C reading as plausible and consistent with current conditions, which is exactly what the market concluded. Frequently Asked Questions What does 99.9% probability mean here? The market assigns a 99.9% chance that Beijing’s official highest temperature on May 5 resolves as exactly 30°C. One-tenth of one percent remains for a data correction or revision before the noon close.What would the NO side pay out? Any bracket other than 30°C would represent the NO outcome. For those to pay, Beijing’s peak would need to be officially recorded outside the 30°C reading, either lower or higher by at least one degree.What single event could still move this price? A China Meteorological Administration correction to the official daily maximum temperature before 2026-05-05 12:00:00 is the only credible repricing event remaining.When does this market resolve? The contract resolves at 2026-05-05 12:00:00. All positions settle based on Beijing’s verified official high temperature for the full May 5 period covered by the market.Is $225,056 in volume enough to trust this price? Volume is moderate for a single-day weather contract. With $210,282 arriving in 24 hours and the price anchored at $1.00, the signal is directionally clear, though thin liquidity at $57,167 means a single large correction trade could shift prices quickly if one emerged. This analysis reflects market conditions as of 2026-05-05 04:10:20. Prediction market probabilities are volatile and shift as new data and regulatory decisions emerge, especially as the 2026-05-05 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 5, 2026 Duration 2 days Resolution Analysis Clean Resolution at Noon China Meteorological Administration confirms the 30°C daily maximum without revision before the 2026-05-05 12:00:00 close. The contract settles at $1.00 and all YES holders collect. No further data events are expected in the window, making this the base case at 99.9% implied probability. Official Data Revision Surfaces Beijing's primary weather station issues a correction before noon, moving the official daily maximum to 29°C or 31°C. The 30°C bracket drops to near zero and an adjacent bracket reprices sharply. Intraday revisions are uncommon but technically possible before final resolution. Adjacent Bracket Gains Ground If a station calibration issue surfaces and the official high is revised upward to 31°C, the 31°C bracket would become the relevant contract. Traders holding adjacent brackets would see rapid repricing in the final hours before the noon close. Multi-Station Discrepancy Emerges Beijing operates multiple meteorological observation points across the city. If cross-station data produces conflicting readings that require arbitration by the China Meteorological Administration, resolution could be delayed or the official figure revised. That scenario is low probability but would be the most disruptive outcome before noon. Key macro factor: Beijing's 2026 spring temperatures have tracked above climatological baselines, consistent with the broader warm anomaly pattern observed across East Asia this season. Market Timeline May 3, 2026, 4:05 AM Market Created May 3, 2026, 4:30 AM Event Start May 3, 2026, 4:34 AM Market Opened May 5, 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 Hong Kong on July 21? 30°C 100% Yes No 25°C or below 0% Yes No Read Article Moving Now Highest temperature in Beijing on July 22? 28°C 74% Yes No 29°C 17% Yes No Read Article Moving Now Highest temperature in Wuhan on July 22? 29°C 56% Yes No 30°C 31% Yes No Read Article Moving Now Highest temperature in Madrid on July 22? 39°C 63% Yes No 40°C 31% Yes No Read Article Moving Now Highest temperature in Hong Kong on July 22? 32°C 47% Yes No 31°C 24% Yes No Read Article Moving Now Highest temperature in Shanghai on July 22? 33°C 39% Yes No 34°C 29% Yes No Read Article Moving Now Natural Disaster in 2026? 25% chance Yes No Read Article Moving Now July 2026 Temperature Increase (ºC) 1.20–1.24ºC 76% Yes No 1.15–1.19ºC 16% Yes No Read Article Loading... 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