Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Trump Prediction) Pick polygram.ink (preferred broker) |
98% | 2% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
98% | 2% | 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.
| Outcome | Probability |
|---|---|
| 36°C | 98% |
| 37°C | 3% |
| 38°C or higher | 1% |
| 28°C or below | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 32°C | 0% |
| 33°C | 0% |
| 34°C | 0% |
| 35°C | 0% |
Market context
Taipei’s late-summer heat usually sits in the low to mid-30s Celsius, so a terminal outcome in that band would be routine rather than exceptional. August climate guides put Taipei’s average high around 33°C to 34°C, with monthly highs commonly reaching about 35°C, which makes the market’s present pricing easier to read as a weather-range call than as a binary shock event.[12][16][17] AccuWeather’s August outlook for Taipei also points to repeated days around 89°F to 90°F, reinforcing the idea that the upper-20s to mid-30s Celsius is the normal operating zone for this date.[1][4]
The current 0% implied probability on the market is not consistent with those climatological baselines, so traders are effectively being asked to price a very specific station reading at Taipei Songshan Airport rather than a generic city high.[8][12] In comparable late-August Taipei cases, the decisive factor is usually whether the day clears 34°C or 35°C at the airport station; that makes the market sensitive to small forecast shifts, cloud cover and sea-breeze effects rather than to a broad regime change.[8][16]
The key catalyst is the intraday forecast path for Taipei Songshan Airport, especially any updated high-temperature guidance from mainstream weather services as the day progresses.[1][7][10] Because the settlement source is the Wunderground daily history page for RCSS, traders should watch whether the forecasted high edges up or down by a degree, since that can move the result across adjacent temperature bands even if the broader Taipei forecast remains unchanged.[8]
Methodology
Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Highest temperature in Taipei on August 6? plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.
Resolution & payout
Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.
Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.
UK Frequently Asked Questions
- What resolution source is used for elections?
- Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.
- Which platform has the deepest political liquidity?
- Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Trump Prediction route into the same order book at 0% fees.
- How fast do political markets react to news?
- High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.
- Why do Polymarket and Kalshi differ on elections?
- Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.
- Are UK election prediction markets available from the UK?
- Yes. Betfair Exchange and Smarkets offer UKGC-regulated UK election markets (seat counts, party share, constituency results). Polymarket also lists UK election contracts with deeper global liquidity. Betfair winnings are typically tax-free for UK individuals; Polymarket profits are subject to HMRC CGT.
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