Tokyo July 22 High at 34°C: Market Locks In

Tokyo’s daily high temperature on July 22 is one of the most precisely trackable weather outcomes on Polymarket right now. The contract for a peak of 34°C has surged to 97% implied probability, driven by a 35% price jump in the past 24 hours. That kind of movement on a same-day weather contract means observed conditions are already closing in on the threshold. The market is pricing certainty, not anticipation.

The market question asks: what is the highest temperature recorded in Tokyo on July 22? The 34°C contract sits at 0.97 YES and 0.03 NO. Resolution closes at 12:00 UTC on July 22, 2026. Total trading volume has reached $73,803, with $51,536 traded in the last 24 hours alone.

How the 34°C Contract Works

This contract resolves YES if Tokyo’s official daily maximum temperature on July 22 registers exactly 34°C (or within the bracket the market defines as the 34°C outcome). The Japan Meteorological Agency measures and publishes official daily temperature records for Tokyo. Resolution uses that official reading.

• YES (0.97): Tokyo’s July 22 high lands in the 34°C bracket. Implied probability: 97%.
• NO (0.03): Tokyo’s July 22 high lands in any other bracket. Implied probability: 3%.

The NO outcome pays if the actual daily high lands in a different bracket: 33°C, 35°C, 36°C, or any other listed outcome. Tokyo’s July average high runs close to 32 to 33°C, so a 34°C reading is above the seasonal norm but well within observed range for late July heat events. A miss happens when afternoon temperatures either stall below 34°C or push past the bracket ceiling into 35°C territory. At 97%, the market has almost entirely closed out that possibility.

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Momentum and Market Signals

The combined momentum signal here is unambiguous. The 1-hour price change is flat at 0.0%, but that flatness at 0.97 tells you everything: the contract has hit its ceiling. The 24-hour change of +35% and a trend score of 64.07 confirm that the repricing happened fast, almost certainly driven by real-time weather observations in Tokyo showing temperatures tracking toward the 34°C bracket as the day unfolded.

Total volume of $73,803 with $51,536 arriving in the last 24 hours shows a sharp burst of conviction trading, not gradual accumulation. Liquidity sits at $203,372, which is unusually deep for a contract this close to resolution on a single-day weather outcome. That depth tells you market makers had high confidence in the range well before today. Volume is below $1M, so one significant new trade could still nudge prices, but with resolution hours away, that window is nearly closed.

• 24-hour price change of +35% reflects real-time temperature tracking, not speculative positioning. Tokyo’s observed afternoon readings almost certainly crossed into 34°C range before this repricing happened.
• 1-hour change of 0.0% at 0.97 means the market has found its floor. There is no new information left to price in before resolution.
• $51,536 in 24-hour volume against $73,803 total confirms most capital entered today, when the outcome became observable rather than forecastable.
• Liquidity of $203,372 exceeds total volume, signaling deep order books on both sides even at near-certainty pricing.
• Trend score of 64.07 supports strong directional momentum toward YES with no reversal signal visible.

Lines Analysis: What the Tokyo Temperature Data Shows

Late July in Tokyo routinely produces daily highs in the 32 to 36°C range. The Japan Meteorological Agency’s Tokyo Observatory, located in Otemachi, publishes same-day readings that prediction markets use for resolution. A 34°C reading on July 22 is consistent with this period’s typical heat range, especially given that Tokyo has recorded multi-day heat events above 35°C in recent summers. The 97% contract price reflects that the day’s temperature trajectory is already observable, not just modeled.

The realistic threat to the 34°C contract is bracket misalignment: if Tokyo’s actual recorded high comes in at 35°C instead, the 34°C contract resolves NO and the 35°C contract captures that outcome. At 97%, the market is essentially saying the observed data points to 34°C as the exact bracket, not 33°C or 35°C. That level of precision is unusual, but same-day weather contracts allow traders to update on real observations, not forecasts.

• Japan Meteorological Agency publishes the official daily high for Tokyo same day. Any reading at or above 35°C reprices this contract sharply downward.
• Urban heat island effects in central Tokyo consistently push the Otemachi reading above suburban or airport measurements. The market is pricing the official station, not an average.
• Cloud cover or afternoon thunderstorms arriving before peak heat could cap the daily high below 34°C. That risk appears priced at 3%.
• A reading at exactly 34°C resolves this contract cleanly. A reading of 34.4°C still resolves YES if the bracket rounds to 34.
• Resolution closes at 12:00 UTC, which is 21:00 JST. The official daily high will already be published by then.

Total volume of $73,803 reflects a small but highly active market where near-unanimous positioning has formed around observed data. The data strongly favors YES. Here’s what the measurements are telling us: Tokyo’s heat on July 22 has already been observed, and traders priced it in fast.

LINES VERDICT

ESSENTIALLY RESOLVED

The 97% probability on the 34°C contract reflects live temperature observations feeding into market pricing, not speculation about an unknowable future. The data doesn’t care about the politics, and in this case it doesn’t care about uncertainty either.

What the market says: At 97% implied probability, the market has treated this as a near-certainty since the 35% price jump over 24 hours. With resolution at 12:00 UTC on July 22, there is almost no time for new information to change the outcome.

Key unknown: The single remaining uncertainty is whether Tokyo’s official daily maximum, as published by the Japan Meteorological Agency’s Otemachi station, lands precisely in the 34°C bracket versus the adjacent 33°C or 35°C outcome. That question resolves within hours.