Highest temperature in Kuala Lumpur on July 19?

Platform comparison

Market context

Kuala Lumpur's equatorial climate delivers consistent daily highs throughout the year, with July falling squarely within the southwest monsoon season. The settlement mechanism relies on Weather Underground's historical data feed from Kuala Lumpur International Airport (WMKK station), which records intraday temperature extremes. The 0% crowd probability suggests either extreme confidence in a specific temperature range or insufficient liquidity to establish meaningful odds across the available brackets.

Historical temperature patterns at WMKK show July daily maxima typically cluster between 32–34°C, with occasional spikes to 35°C during drier spells. Comparable July datasets from the Malaysian Meteorological Department indicate that temperatures exceeding 36°C remain statistically rare at this location, occurring perhaps once per decade. Traders evaluating this market programmatically should cross-reference WMKK's 10-year July archive against the resolution brackets offered; the distribution of historical outcomes directly maps to expected probability weightings.

The settlement window closes at midday UTC on 19 July 2026, creating a practical constraint: Weather Underground's historical records typically update with complete daily data by early evening local time (Malaysia Standard Time, UTC+8). Automated resolution systems should account for potential data delays or corrections within the first 24 hours post-settlement. Monitoring the Malaysian Meteorological Department's monsoon forecasts in early July 2026 will signal whether atmospheric conditions favour above-median temperatures during the resolution window.

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

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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 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.

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.

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.