Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
99% | 1% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
99% | 1% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 36°C | 99% |
| 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% |
| 37°C | 0% |
| 38°C or higher | 0% |
Market context
The relevant event is whether Taipei Songshan Airport’s *daily high* on 6 August reaches the range that corresponds to the market’s settlement buckets. In the broader Taipei market, the crowd is pricing a hot day: Polymarket currently has **35°C** as the leading outcome at **31%**, with **36°C** next at **27%**, while the contract’s implied **0% YES** on the site you are comparing suggests little or no demand on that venue despite the same underlying weather risk.[7]
That pricing sits comfortably within the normal August climate pattern for Taipei. Long-run climate references put August highs around **33°C to 34°C** with very humid conditions, while forecast services are already showing daytime highs clustered roughly between **86°F and 92°F** and Taipei-specific August guidance of around **33°C to 36°C** on hotter days.[1][12][18] In other words, a reading in the mid-30s is not an outlier for this time of year, which helps explain why the market is concentrated in the 35°C–36°C band rather than the lower buckets.[1][12][18]
For traders, the main catalyst is not a scheduled announcement but the evolving local weather setup: heat, cloud cover, afternoon convection and any typhoon-adjacent rain band can pull the day’s peak down by a degree or two, while clear, humid conditions can push it up. Current short-range forecasts diverge somewhat, with one service pointing to **patchy rain** and a high near **30°C**, while others still show a hotter outcome closer to the low-to-mid 30s, so the final airport observation may land below the broader city forecast if cloud and rain arrive early.[9][8][17]
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
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.
FAQ
- 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.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- 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.
- 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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