This market asks whether Tokyo's daily maximum temperature will reach exactly 19°C on May 2, 2026—a specific, resolvable meteorological outcome. Early May in Tokyo typically experiences highs ranging from 18–24°C, driven by variable cloud cover, wind patterns, and seasonal weather systems migrating through the region. The market is resolvable because official temperature measurements from a designated Tokyo Meteorological Department station provide an objective outcome. The current 0% odds suggest strong trader conviction that an exact 19°C reading is exceptionally unlikely, reflecting either recent weather forecast models pointing away from this threshold, or the inherent statistical rarity of hitting a single integer value. Prediction markets on precise temperature outcomes reveal how traders weigh climatological baselines against current forecast data and the narrowness of the target. The extreme low price also implies little recent price movement or conviction change—traders entered this market with skepticism and no new information has shifted the aggregate view. For someone unfamiliar with Tokyo's early May climate, note that 19°C is indeed plausible as a single daily high, but the market's consensus suggests current atmospheric guidance points elsewhere.
Deep dive — what moves this market
Tokyo in early May sits in a seasonal transition period where daytime highs range widely based on shifting air mass patterns. Typical May 2 highs cluster around 18–23°C, but substantial day-to-day variation is normal, with both cooler northerly flows and warmer southerly systems possible within the same week. An exact 19°C reading falls within the plausible range but represents only a narrow band of the probability distribution—perhaps 5–15% climatologically, depending on the specific forecasting model. The current market odds at 0% suggest traders believe the likelihood is even lower, possibly reflecting three compounding factors: the difficulty of hitting a precise integer value rather than a range, recent weather pattern data showing no strong signal toward 19°C specifically, and structural market illiquidity making accurate calibration difficult. Factors that could push the market toward YES include an incoming cool, stable high-pressure system locking in mild highs, or a weak low-pressure system limiting afternoon heating. Conversely, any warmer air mass advection via southwesterly flow or strong solar heating would drive highs toward 20°C or above, while persistent cloud cover or a deep upper-level trough would lower maximum temperatures to 16–18°C. Historical data from Tokyo's Meteorological Department shows May 2 highs clustering around 20°C with a standard deviation near ±2–3°C, making 19°C a reasonably common outcome in the long run—yet the market's 0% odds suggest recent forecasts or prevailing trader models are pointing away from that specific threshold. The nonexistent liquidity at 0% reflects deep consensus skepticism; any meaningful price movement upward would signal a shift in conviction based on updated weather data or an ensemble model consensus change toward this narrow band.
What traders watch for
May 1 evening weather forecast updates: track if any forecast guidance begins to cluster around 19°C for May 2 highs in Tokyo.
Cloud cover and wind speed forecasts from May 1 night through May 2 morning—both suppress daytime heating and lower maximum temperatures.
Tokyo Meteorological Department pressure, wind, and radiation indices released May 1: early signals of what May 2 warmth will be.
Any significant upper-air pattern shifts reported overnight May 1–2; warm advection would favor 20°C+, cool air would favor 16–18°C.
Official resolution data source confirmation: which Tokyo station's measurements Polymarket will use to settle (critical for exact-value markets).
How does this market resolve?
Market resolves YES if Tokyo's official maximum temperature on May 2, 2026, equals exactly 19°C as recorded by the designated meteorological station; NO otherwise. Resolution occurs after measurement is finalized and published by the relevant authority.
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.
