Highest temperature in Beijing on May 26?

Platform comparison

Active sub-markets

Market context

Beijing's highest temperature on 26 May 2026 will be measured at Capital International Airport Station and resolved through Weather Underground historical data. The settlement window closes at midday UTC, meaning traders must commit positions before the day's peak heat has necessarily occurred—a structural constraint that differs markedly from Kalshi's same-day settlement windows on US weather contracts, where intraday updates are more granular. Polymarket's decimal odds format here reflects the wide range of possible outcomes across late spring in Beijing, where May temperatures typically span 15–32°C; Betfair and Smarkets would display equivalent probabilities differently, though all three platforms charge taker fees that compress expected value on weather markets where historical volatility is well-documented.

Beijing's May climate shows consistent patterns: the city experiences warm, dry conditions as summer approaches, with daily highs clustering between 25–30°C in the latter half of the month. The 0% crowd probability currently assigned suggests either extreme confidence in a specific temperature band or minimal liquidity at the extremes of the range. Historical data from 2015–2024 shows only two instances of temperatures exceeding 32°C in late May, establishing a baseline for assessing tail-risk pricing.

Traders should monitor China Meteorological Administration forecasts released in early May 2026, which typically provide 10-day outlooks with reasonable accuracy for Beijing. Anomalous weather patterns—such as early heat waves driven by Tibetan high-pressure systems—can shift May temperatures sharply upward, though such events remain statistically uncommon at this season.

Methodology

This page compares Highest temperature in Beijing on May 26? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. Live odds come from the Polymarket order book; the other venues' contract details are maintained manually because their APIs aren't directly comparable. Every CTA routes to Polymarket Alternative UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket Alternative UK, which mirrors the Polymarket order book at 0% fees. 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.

What does it cost to trade on Polymarket Alternative UK?

Zero. Polymarket Alternative UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Alternative UK triggers a quick verification flow that finishes in minutes.