Pronóstico: Highest temperature in Singapore on July 8?

Platform comparison

Market context

On 8 July 2026, the Singapore Changi Airport Station will record its highest daily temperature in degrees Celsius, with the market resolving to the range containing that peak. Today, Polymarket prices the YES contract for any temperature above 32°C at 0%, reflecting a crowd consensus that extreme heat is improbable given current climatology. This on-chain position, settled in USDC on the Polygon network via conditional tokens, treats the event as a near-certainty for the NO outcome, despite the settlement window ending in 12:00 UTC on 8 July 2026.

Historical July data frames this 0% probability as rational, with average daily highs hovering around 31°C and rarely exceeding 32°C. While Singapore hit a record 37°C in May 2026, equalling a 40-year high, July typically sees steady rainfall and maritime influence that suppresses extreme peaks. Even during the hottest days, temperatures seldom breach 32°C, and the southwest monsoon brings consistent cloud cover and a 40% chance of rain, making a heat dome scenario unlikely in this tropical, maritime setting.

Traders should monitor real-time Wunderground updates for the Changi station and any sudden shifts in regional weather patterns, such as reduced cloud cover or anomalous humidity drops. Recent news from The Straits Times highlights Seoul’s record 37.8°C in early July, but Singapore’s maritime climate remains a stabilising factor that historically prevents such extremes. Watch for afternoon thunderstorm forecasts and monsoon intensity reports, as these dependencies directly influence whether the day’s peak stays within the expected 31–32°C range.

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

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 Qué Es. 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 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.