Highest temperature in Beijing on August 8?

Platform comparison

Market context

Beijing’s temperature on 8 August is typically a hot-season afternoon story, with August averages clustered around 30–31°C for daytime highs and the city’s record August maxima reaching the low-to-mid 30s Celsius in long-run climate summaries.[3][7][15] For this contract, the key is the **highest temperature at Beijing Capital International Airport** as recorded in Wunderground’s Daily Observations, not the summary high, so the relevant settlement threshold is the *single warmest hourly or sub-hourly reading* on the station page.[17]

That framing makes the current **0% YES** crowd price look detached from ordinary Beijing August climatology, because comparable datasets show that temperatures near 30°C are normal and individual August highs above 33°C are not rare in the historical record.[3][5][13][15] By contrast, current market pricing appears to assume either a materially cooler reading at the airport or a resolution convention that is narrower than the usual citywide high-temperature discussion, so analysts would generally compare this contract with local weather histories rather than broad “daily high” summaries.[1][17]

The main catalysts are short-horizon weather developments over the settlement window: cloud cover, showers, and afternoon convective activity can materially cap the airport’s peak even when the broader metropolitan forecast looks hot.[1][4][11] At this time of year, a trader would watch the latest airport observations and any mesoscale forecast updates, because Wunderground’s daily history table can diverge from the headline high/low box and the market settles on the former if the two differ.[17]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets UK, which mirrors the Polymarket order book directly.

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.

UK Frequently Asked Questions

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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.

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Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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.

What are the best prediction markets for UK traders in 2026?

For UKGC-regulated markets: Betfair Exchange (sports, politics) and Smarkets (sports, politics, lower commission than Betfair). For broader global event prediction: Polymarket (deepest liquidity, 0% fee, USDC settlement). For US-regulated option: Kalshi (USD, limited UK payment options). Most serious UK traders use a combination of Betfair for regulated sports and Polymarket for broader markets.