Highest temperature in Singapore on July 8?

Platform comparison

Market context

The underlying real-world event is whether Singapore Changi Airport will record a highest temperature of 32°C or above on 8 July 2026, a threshold the market currently prices at 0% YES. On Polymarket, this contract trades on the Polygon network using USDC, where conditional tokens reflect the crowd’s near-total dismissal of such extreme heat, despite July typically being one of Singapore’s hottest months. Historical data from Changi shows that while daily highs often reach 30–31°C, temperatures exceeding 32°C are rare; for instance, the July 6, 2026 market (a similar event) shows 29°C as the highest volume outcome, with 32°C receiving negligible backing[1]. BBC Weather forecasts thundery showers and a high of 31°C for 8 July, with humidity at 72% and southerly winds at 6 mph, reinforcing the likelihood that 32°C will not be breached[2].

Traders should monitor Wunderground’s live hourly updates for Changi Airport, as the market resolves based on the highest recorded temperature across all times on 8 July, not a forecasted average[4]. A key catalyst is the potential for unseasonal heatwaves linked to regional climate anomalies; however, recent forecasts from AccuWeather indicate only morning rain and a high of 88°F (31°C) for 8 July, with no indication of extreme heat spikes[6]. Additionally, the Singapore Meteorological Service’s real-time METAR data may reveal sudden pressure shifts that could influence temperature, though current readings show steady pressure at 1006mb[3]. While Lines.com notes that 31°C is the most likely single outcome, competing temperatures on either side collectively suggest 32°C remains improbable[7]. No official announcements are expected to alter this trajectory before the settlement window closes on 2026-07-08T12:00:00Z.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

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 PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 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.