Pronóstico: Highest temperature in Hong Kong on July 1?

Platform comparison

Market context

The highest temperature recorded in Hong Kong on 1 July 2026 will determine the outcome of this prediction market, with the Hong Kong Observatory’s official daily maximum in degrees Celsius serving as the resolution source. Today, Polymarket prices the YES contract at 0%, implying the crowd believes the temperature will fall outside the specified range, despite July being Hong Kong’s hottest month on average.

Historical data shows July in Hong Kong typically sees average highs near 32.2°C (89°F), with recent years like 2021 marking the warmest annual mean since 1884, and July 2023 recording the city’s hottest month ever in terms of hot days and nights[8][9]. However, extreme variability exists: on 1 July 2022, rain caused temperatures to drop to just 25.4°C, the month’s lowest, illustrating how weather systems can drastically suppress peak readings even in peak summer[5].

Traders should monitor the Hong Kong Observatory’s upcoming Daily Extract publication for 1 July 2026, which finalises the Absolute Daily Max value, and watch for any tropical cyclone warnings or monsoon rain forecasts that could lower temperatures. Recent forecasts for July 2026 predict daily highs between 29.4°C and 33.9°C (85°F–93°F), but sudden shifts in cloud cover or rainfall remain the key catalysts[3]. The market cannot resolve until the Observatory releases the confirmed data, making timing and data dependency critical for on-chain USDC settlement on Polygon[1][4].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Pronóstico: Highest temperature in Hong Kong on July 1? 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 Polymarket Qué Es, 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

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.

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 Polymarket Qué Es trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.