Highest temperature in Kuala Lumpur on July 30?

Platform comparison

Market context

Kuala Lumpur International Airport is expected to top out in the low 30s Celsius on 30 July, which sits comfortably within the city’s normal July pattern and leaves the contract’s temperature bands focused on whether the day reaches the mid-30s rather than any extreme outlier. Current forecasts cluster around a high near 31–34°C, with afternoon showers or thunderstorms possible, and the airport’s observed maximum will depend on whether cloud and rain arrive early enough to cap heating. The market’s 0% YES crowd price therefore implies a sharp scepticism that the day’s recorded peak will land in the upper range rather than the more typical low-30s outcome.[2][3][4][5][7][10][11][15]

That pricing is broadly consistent with the forecast stack, which points to warm, humid conditions but not a heatwave-level spike: AccuWeather shows 92°F/79°F for Kuala Lumpur, the Malaysian Met Office has recently published local maxima of 34°C for the district, and other mainstream forecasts sit around 32–33°C with rain chances ranging from moderate to high.[1][3][4][5][6][9][11][15] For this contract, the key comparison is not whether it is hot — it almost certainly is — but whether the airport’s *officially recorded* daily high clears the specific threshold in the market’s selected range. A divergence between sportsbook-style weather pricing and the prediction market here would usually come from a different reading of precipitation timing, airport versus city-centre temperatures, or a narrower expectation around the upper end of the day’s range, rather than from any disagreement that Kuala Lumpur will be warm.[2][7][10][12][14]

Sources: 1 · 2 · 3 · 4 · 5

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

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

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets 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.