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Highest temperature in Chengdu on August 6?

How the prediction-market book is pricing "Highest temperature in Chengdu on August 6?" right now, with a side-by-side platform comparison and zero-fee CTAs.

29°C 85% 30°C 10% 31°C 2% 32°C 1% Volume: $95K Liquidity: $96K Closes: 6 Aug 2026
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Highest temperature in Chengdu on August 6?

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Kalshi UK) Pick
polygram.ink (preferred broker)
85% 15% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Live odds →
Polymarket (direct)
polymarket.com
85% 15% 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
29°C85%
30°C10%
31°C2%
32°C1%
25°C or below0%
26°C0%
27°C0%
28°C0%
33°C0%
34°C0%
35°C or higher0%

Market context

Polymarket is pricing **0% YES** on Chengdu’s highest temperature on 6 August, with the contract settled in USDC on Polygon through conditional tokens, so the market is effectively saying there is no meaningful chance of a top-end reading at Chengdu Shuangliu International Airport today. The resolution will come from Wunderground’s daily history page for that station, using the day’s highest recorded Celsius temperature within the market’s settlement window, so traders are watching the airport observation rather than a citywide average.

That near-zero price sits against a climate backdrop that does not support an outright cold-day read. August in Chengdu is typically hot and humid, with long-run guidance clustering around the low 30s Celsius and frequent rainfall, while forecast sources for early August 2026 have pointed to highs in the low-to-mid 30s and rain showers rather than a cool, stable air mass.[1][5][6][9] Wunderground’s own historical framing for the station is what matters here: if the airport manages even a brief warm-up between showers, the printed high can still land in a higher bucket than the market is implying.

For traders, the main catalysts are the day’s airport observations, the timing of afternoon heating, and whether cloud cover or precipitation suppresses the maximum before the settlement cut-off. Chengdu’s current weather reports show warm, humid conditions in the city, and official city forecasts have placed Chengdu at 21-35°C with rain for 6 August, which is consistent with a market that can move if the morning starts mild but clears later.[12][15][9] On Polymarket, any shift comes through buying or selling USDC exposure in the relevant conditional token outcome as fresh readings accumulate, so the practical watchpoint is not just the forecast but the highest official airport temperature that actually prints before resolution.

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 Kalshi UK, which mirrors the Polymarket order book directly.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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.
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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