Beijing in mid-May typically experiences warm spring weather. The 0% YES odds indicate the market has near-certainty that the high temperature on May 17 will not be exactly 15°C—traders expect it to fall outside this precise threshold. This is a recurring daily weather prediction market tracking Beijing's daily high temperature. Current market liquidity stands at $36,508, with 24-hour trading volume at $1,354, reflecting ongoing trader interest in daily weather outcomes. The zero odds suggest strong market consensus that May 17's high will diverge from exactly 15°C. Given Beijing's typical May weather patterns—with highs ranging from 24–27°C depending on atmospheric conditions—a 15°C high would represent unseasonably cool conditions. The market has priced in this rarity accordingly. Traders betting on exact-temperature thresholds face high precision requirements; weather systems rarely deliver exact values. The odds trajectory reflects accumulated trading signal, with the zero level indicating no edge for YES traders at current prices.
Deep dive — what moves this market
Beijing's climate in mid-May is characterized by transition toward summer. Historically, average daily highs in this period range from 24–27°C, with overnight lows around 14–17°C. A high temperature of exactly 15°C would be significantly cooler than seasonal norms, suggesting a major cold-air incursion or unusual weather system—a rare occurrence for this time of year. The prediction market tracking this specific threshold reflects traders' assessment of meteorological precision: achieving an exact temperature reading is inherently improbable in natural weather systems, where daily highs typically vary by several degrees based on cloud cover, wind patterns, and atmospheric pressure fluctuations. Factors supporting a YES outcome (15°C high) would require a significant departure from Beijing's typical May pattern. A strong cold front from the north, unusual cloud cover suppressing solar heating, or an anomalous atmospheric pressure system could theoretically depress temperatures. However, such conditions are statistically infrequent in mid-May. Coastal influences and continental air masses would need to align in ways that produce precisely this outcome—a combination traders have assessed as extremely unlikely. Beijing's latitude and inland continental position generally protect it from extreme temperature swings by late spring. Factors supporting NO (high will not be exactly 15°C) are overwhelming. The market's 0% YES odds reflect this asymmetry. Normal weather variability would push the high either above or below 15°C. Any slight warming—even 1–2°C higher—moves the outcome to NO, as does any cooler trend. The margin for error is infinitesimal. Recent Beijing weather data, spring atmospheric patterns, and historical May records all point toward temperatures well above 15°C as far more probable. The current 0% spread reveals maximal trader conviction that precision cannot be achieved. The market has essentially reset confidence intervals: any weather system producing exactly 15°C as a daily high is priced as a near-impossible event. This is consistent with how exact-threshold weather markets typically behave—they price in the vanishingly small probability of hitting a target to the degree. The $36,508 liquidity suggests moderate trading activity, with accumulated positions overwhelmingly favoring NO.
What traders watch for
Monitor China Meteorological Administration forecast for May 17; watch for cold-front signals or unusual cooling patterns in Beijing region.
Beijing's historical May high-temperature range is 24–27°C; a 15°C reading would require unseasonable arctic air—extremely rare for spring.
Check overnight low predictions and cloud-cover forecasts; clear skies and solar heating typically push highs well above 15°C in May.
Resolution depends on official meteorological station reading; readings of 14.5°C or 15.1°C trigger NO if outside exact 15°C threshold.
How does this market resolve?
Market resolves YES if Beijing's official daily high temperature on May 17, 2026 is exactly 15°C; resolves NO otherwise. Resolution occurs at 2026-05-17T00:00:00 UTC based on China Meteorological Administration data.
Prediction markets aggregate trader expectations into real-time probability estimates. On Polymarket Trade, every market question resolves YES or NO based on a specific event outcome; traders buy shares of the side they believe will resolve positively. Prices range 0¢ (certain no) to 100¢ (certain yes) and naturally reflect the crowd-implied probability of YES. This page summarizes the market state for readers arriving from search; for live trading (place orders, see order book depth, execute a trade) open the full interactive page linked above.
