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Highest temperature in Shanghai on August 6?

Five-platform snapshot of "Highest temperature in Shanghai on August 6?" — live Polymarket pricing, plus how Kalshi, Betfair and Manifold structure the same contract.

33°C 73% 34°C 25% 35°C 2% 27°C or below 0% Volume: $85K Liquidity: $187K Closes: 6 Aug 2026
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Highest temperature in Shanghai on August 6?

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Prediction Today) Pick
polygram.ink (preferred broker)
73% 27% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Live odds →
Polymarket (direct)
polymarket.com
73% 27% 0% Geo-blocked in US/UK/EU USDC, on-chain Live odds →
Kalshi
kalshi.com
Up to 7% per trade US-only, KYC required USD Live odds →
Betfair Exchange
betfair.com
2-5% commission Full KYC from first trade GBP / EUR Live odds →
Manifold Markets
manifold.markets
Play-money (mana) None — play-money Mana (no cash-out) Live odds →

Outcome probabilities

Current market-implied probability for each outcome, from the live order book.

OutcomeProbability
33°C73%
34°C25%
35°C2%
27°C or below0%
28°C0%
29°C0%
30°C0%
31°C0%
32°C0%
36°C0%
37°C or higher0%

Market context

Shanghai is starting the session with a hot, humid forecast and no obvious sign of a cool-down large enough to pull the day’s maximum far below seasonal norms. Current outlets are pointing to highs in the mid-30s Celsius for today, with temperatures around \(33\)–\(36^\circ\)C and only scattered shower risk, while the broader August climate profile in Shanghai is typically very warm and muggy, with average highs near \(31\)–\(34^\circ\)C depending on the source.[2][3][7][18]

That makes the market’s **0% YES** crowd price look detached from the weather setup rather than anchored in it. For context, Shanghai’s August highs usually sit in the upper 20s to low 30s Celsius, and today’s forecast is already at or above that band; on a station-specific basis, even a modestly cooler city-wide reading can still leave Pudong Airport well above the low-temperature ranges implied by a zero-probability view.[1][7][8] The key framing is that the market resolves on the highest temperature recorded at Shanghai Pudong International Airport, not the city average, so brief midday heating matters more than overnight conditions.[1]

Traders should watch the timing and intensity of showers, cloud cover and any thunderstorm development through the afternoon, because those are the main factors that can cap the station’s daily high. The available forecasts show only passing showers or light rain risk, alongside strong heat and humidity, which usually supports a late-morning or early-afternoon peak before cloud build-up limits further ascent.[2][14][19]

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 Prediction Today, 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

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 Prediction Today. 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.
Is Polymarket legal in the UK?
Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
Do I pay tax on prediction market profits in the UK?
UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
How do I deposit on Polymarket from the UK?
UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
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