Highest temperature in Kuala Lumpur on July 27?

Platform comparison

Market context

Polymarket is pricing this Kuala Lumpur temperature contract at **0% YES** this morning, which means the market is effectively saying the KLIA weather station is not being assigned any meaningful chance of hitting the relevant range before the settlement window closes on Polygon with USDC-backed conditional tokens. With the end point set for 12:00 UTC, traders are not forecasting the abstract climate of Kuala Lumpur; they are marking the *single highest reading* that Wunderground records at Kuala Lumpur Intl Airport Station for today.

For context, a 0% print is common in weather markets when the remaining time window is short and the outcome depends on a specific station observation rather than citywide conditions. Kuala Lumpur’s airport station is subject to the usual tropical pattern of early heating, cloud build-up, and showers, so the highest temperature often arrives before midday rather than late in the day. That makes the noon UTC cutoff especially important: the contract is about the peak already logged, not the eventual day’s full weather story.

The main catalyst is the live evolution of the local forecast between now and the settlement cutoff, especially any sharp reduction in cloud cover or unexpected dry, sunny intervals that could push the station into a higher band. Traders will also watch whether thunderstorms develop earlier than expected, because convective rain can cap the daily maximum quickly. On Polymarket, that means the token price is driven by the likelihood of a specific Wunderground reading at WMKK, not by broader regional weather headlines.

Methodology

We track Highest temperature in Kuala Lumpur on July 27? 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

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

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 PolyGram. 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.

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.

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 PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.