Highest temperature in Taipei on July 1?

Platform comparison

Market context

The underlying event is the highest temperature recorded on 1 July 2026 at Taipei Songshan Airport, measured in degrees Celsius and sourced from Wunderground. With the crowd-implied probability of a “YES” outcome sitting at 0%, the market currently treats any specific temperature range as effectively impossible, suggesting a near-total consensus that the contract will not resolve within the anticipated band. This stark divergence from sportsbook lines—where weather derivatives often carry non-zero odds for extreme heat—raises questions about whether the prediction market is underpricing tail risk or correctly reflecting a lack of catalysts for record-breaking conditions.

Historically, July is Taipei’s hottest month, with average highs around 34°C (92°F) at Songshan Airport, though extreme spikes have occurred; in 2024, Taipei hit 39.7°C, its highest in 124 years, driven by a persistent heat dome and weak monsoon activity [8]. Comparable cases from recent years show that while 35–37°C is typical, temperatures exceeding 38°C remain rare but not unprecedented, especially when influenced by subtropical ridges and low cloud cover. The current 0% probability appears to ignore this historical volatility, potentially misaligning with analyst consensus that July heatwaves in Taiwan are increasingly frequent due to climate trends [3].

Traders should monitor the Central Weather Administration’s daily forecasts for heat dome developments, monsoon strength, and cloud cover, as these directly influence peak temperatures [4]. A recent report from Taiwan Plus News noted that temperatures in Taipei soared to 38.3°C in May, marking the hottest May day in recent history, underscoring the potential for early summer extremes [9]. Key dependencies include the timing of the East Asian monsoon retreat and any announcements from the Meteorological Bureau regarding high-pressure systems; without these catalysts, the market’s 0% stance may persist, but any shift in forecast models could rapidly alter implied probabilities.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Taipei on July 1? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Best Prediction Markets UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.