Highest temperature in Hong Kong on June 25?

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Market context

Hong Kong is currently experiencing very hot conditions, with the Hong Kong Observatory issuing a Very Hot Weather Warning as temperatures climb to 30.0°C this morning, yet the prediction market for the highest temperature on 25 June 2026 shows a 0% probability for the YES outcome[8][6]. On Polymarket, this contract trades with zero backing for the event, reflecting the crowd’s belief that the specific temperature range in question is virtually impossible to hit, despite the on-chain mechanics allowing USDC settlement on Polygon via conditional tokens[3].

Historically, June in Hong Kong sees daily highs between 29°C and 34°C, with the average high reaching 30°C and extreme heat events pushing temperatures to 34.6°C in recent years[1][5]. The current 0% probability aligns with comparable cases where the market dismissed outlier ranges that never materialised, even during above-normal temperature seasons forecast for June to August 2026[4]. Traders should note that the resolution depends entirely on the Hong Kong Observatory’s finalized "Daily Extract" data, which is not yet published for this date[7].

The key catalysts to watch include the Observatory’s official release of the "Absolute Daily Max" figure once the Daily Extract is finalized, as the market cannot resolve until this data is published[7]. Recent announcements confirm the Very Hot Weather Warning remains active, and traders must monitor the Observatory’s website for the final temperature reading, which will determine the market’s outcome[8]. No other external schedules or dependencies affect this resolution, making the Observatory’s data the sole determinant[7].

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). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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?

On Polymarket Legit?, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket Legit? is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

What does it cost to trade on Polymarket Legit??

Zero. Polymarket Legit? routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Legit? triggers a quick verification flow that finishes in 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.