Highest temperature in Singapore on July 8?

Platform comparison

Market context

The underlying event is the daily peak temperature at Singapore Changi Airport on 8 July 2026, a date falling squarely within the southwest monsoon season when maritime influence typically suppresses extreme heat. Current crowd-implied probability sits at 0% for any outcome exceeding 31°C, a stark divergence from historical patterns where daily maximums frequently breach this threshold.

Historical data frames this 0% probability as an outlier rather than a consensus. July records at Changi show daily highs consistently ranging between 30°C and 32°C, with AccuWeather forecasting 2026 highs between 85°F and 89°F (approximately 29.4°C to 31.7°C) [3]. BBC Weather confirms today’s high at 31°C [1], while long-term averages indicate highs rarely fall below 84°F (28.9°C) or exceed 92°F (33.3°C) [4]. Similar contracts on Lines.com show 31°C outcomes trading at 31.5% probability, highlighting a meaningful gap between sportsbook lines and this prediction market’s implied odds [5].

Traders should monitor real-time meteorological updates for thundery showers, which are forecast for today and could temporarily lower peak temperatures, though the maritime buffer usually prevents sustained cooling [1]. The primary catalyst remains the absence of a heat dome; analysts note that tropical cities like Singapore rarely exceed 97°F (36.1°C) due to oceanic influence, making extreme outliers improbable [6]. No official announcements or schedule changes are pending, leaving the resolution entirely dependent on Wunderground’s recorded daily maximum for WSSS.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Singapore on July 8? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.

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.

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.

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.

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.