Highest temperature in Singapore on July 27?

Platform comparison

Market context

Polymarket is pricing this Singapore temperature contract at **0% YES** right now, which means the market is effectively saying the chance of the Changi Airport Station posting a day’s high in the relevant range is negligible in USDC terms on Polygon. With settlement tied to the Wunderground daily record for Singapore Changi Airport, the key question is not the city’s average climate but the actual maximum reading printed on the source page by the settlement window.

Historically, Singapore’s July weather is warm and very humid, but it is also one of the wetter months, with average highs around 29°C and substantial rainfall across the month. That combination usually keeps daytime temperatures fairly compressed rather than producing extreme spikes, which helps explain why a narrow temperature band can trade very differently from a broader “hot day” view. Current conditions are also consistent with the broader pattern: BBC lists Singapore at 29°C, while AccuWeather shows 81°F with a RealFeel of 96° under high humidity, underlining the difference between ambient temperature and perceived heat.[1][3]

For traders, the practical catalysts are mostly weather-system driven rather than event-driven: cloud cover, rainfall timing, and any short-lived breaks in monsoon-like conditions before the noon UTC settlement cutoff. The market depends on the Wunderground station reading at Singapore Changi Airport, so a trader should watch whether the airport sees a late-morning warm-up or remains capped by showers and humidity; July climate references point to frequent rain days and heavy precipitation, which can limit upside in the daily maximum.[2][4][6]

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

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

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.

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.

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.