Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket App UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open the market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open the market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open the market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open the market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 36°C | 100% |
| 29°C or below | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 32°C | 0% |
| 33°C | 0% |
| 34°C | 0% |
| 35°C | 0% |
| 37°C | 0% |
| 38°C | 0% |
| 39°C or higher | 0% |
Market context
The real-world event driving this market is the peak daily temperature recorded at Taipei Songshan Airport on 1 July 2026, measured in degrees Celsius. Historical data confirms that July sits within the island’s hottest season, which runs from early June to mid-September, with average daily highs consistently exceeding 87°F (30.5°C) [2]. In July 2025, temperatures at this station reached around 80°F (26.7°C) during cooler intervals, though typical peak readings in recent years have climbed to 95°F (35°C) or higher [1][6]. The current crowd-implied probability of 0% for a specific low range suggests traders are confident temperatures will exceed that threshold, aligning with the predictable thermal intensity of midsummer in Taipei.
A power-user approaching this programmatically would monitor real-time feeds from Wunderground and cross-reference with AccuWeather’s 10-day forecasts, which currently predict 95°F (35°C) with afternoon rain for 1 July [5]. Key catalysts include the Central Weather Administration’s hourly updates on UV index and precipitation probability, both of which influence peak temperature outcomes [4]. Recent meteorological models indicate a 40% chance of local thunderstorms, which could temporarily suppress highs but rarely prevent them from reaching seasonal norms [1]. Traders should also watch for scheduled weather bulletins from the Taiwan Meteorological Agency, as sudden shifts in cloud cover or wind direction can alter the day’s maximum reading within minutes.
Methodology
We track Highest temperature in Taipei on July 1? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.
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.
FAQ
- 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.
- What does Polymarket cost to trade?
- 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.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket App UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
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