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Highest temperature in Taipei on August 9?

How the prediction-market book is pricing "Highest temperature in Taipei on August 9?" right now, with a side-by-side platform comparison and zero-fee CTAs.

27°C 53% 28°C 18% 26°C or below 13% 29°C 7% Volume: $98K Liquidity: $20K Closes: 9 Aug 2026
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Highest temperature in Taipei on August 9?

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Polymarket Review UK) Pick
polygram.ink (preferred broker)
53% 47% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Trade this market →
Polymarket (direct)
polymarket.com
53% 47% 0% Geo-blocked in US/UK/EU USDC, on-chain Trade this market →
Kalshi
kalshi.com
Up to 7% per trade US-only, KYC required USD Trade this market →
Betfair Exchange
betfair.com
2-5% commission Full KYC from first trade GBP / EUR Trade this market →
Manifold Markets
manifold.markets
Play-money (mana) None — play-money Mana (no cash-out) Trade this market →

Outcome probabilities

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

OutcomeProbability
27°C53%
28°C18%
26°C or below13%
29°C7%
30°C3%
31°C1%
32°C0%
33°C0%
34°C0%
35°C0%
36°C or higher0%

Market context

The event is the **highest recorded temperature at Taipei Songshan Airport** on 9 August, with resolution tied to the Weather Underground **Daily Observations** table rather than the summary high/low display. For a programmatic setup, the cleanest approach is to poll the station page, parse the day’s observation rows, and lock the maximum Celsius reading once the settlement window closes; that matters because the market resolves to the *range* containing the top observed value, not to a forecast number or app-facing headline.

The current 3% yes price is low relative to Taipei’s August climatology, which is normally hot and humid, with average highs around the low 30s Celsius in weather guides and historical summaries.[5][6][12][16] At the same time, today’s forecasts in the market data point to heavy rain or “not as hot” conditions, with highs around 30–31°C rather than extreme heat, which supports a skew away from the upper temperature bands.[2][10][13][15] For traders using bots or conditional orders, the useful analogue is not “will Taipei be hot?”, but “will a single observed reading at RCSS clear the next bracket up?”—a much narrower problem.

The main catalysts are the day’s actual observation cadence and any weather interruptions that suppress afternoon heating, especially heavy rain, overcast conditions, or typhoon-related rainfall mentioned in current forecast pages.[2][10][14][15][16] A power-user workflow would monitor the live observations table during local daytime, compare it with forecast products, and trigger alerts when the running maximum approaches a band threshold. Because the source is a station-specific historical log, the most relevant dependency is the final published observation set rather than broader Taipei city forecasts or airport app summaries.[3]

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 Polymarket Review 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

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 Polymarket Review 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.
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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