Highest temperature in Hong Kong on June 17?

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Market context

On 17 June 2026, the Hong Kong Observatory will record a single daily maximum temperature in Celsius, rounded to one decimal place. That figure will determine which range this market settles into. Currently, Polymarket prices all outcomes at 0% YES across the board—a technical artefact of how conditional tokens distribute when no liquidity has yet formed around any specific temperature band. The settlement window closes at 12:00 UTC on that date, though the Observatory typically publishes its daily extract within 24 hours of observation completion.

Hong Kong's June temperatures are remarkably consistent year-on-year. Historical data shows daily maxima in mid-June cluster between 29°C and 32°C, with the 30-year average around 30.5°C. Extreme outliers—temperatures below 27°C or above 35°C on this date—occur in fewer than 5% of years. The 0% crowd probability reflects genuine uncertainty about which specific range will resolve, not doubt that the event will occur; traders are simply waiting for liquidity to form around plausible bands before committing USDC to conditional tokens on Polygon.

The key dependency is the Hong Kong Observatory's publication schedule. The Observatory publishes daily climate extracts on a fixed timetable; any delay in data release would delay market settlement. Traders should monitor the Observatory's website directly rather than relying on secondary sources, as the resolution criteria explicitly reference their "Absolute Daily Max" figure from the specified daily extract. Seasonal patterns suggest early-to-mid June typically precedes the onset of the southwest monsoon, which can drive temperatures higher later in the month.

Methodology

We track Highest temperature in Hong Kong on June 17? on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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

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.

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?

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.