Highest temperature in Hong Kong on June 22?

Platform comparison

Active sub-markets

Market context

Polymarket is pricing this Hong Kong heat contract at **0% YES** right now, so the market is treating a highest daily temperature in the relevant winning range as effectively dismissed for the moment. On Polymarket, that price reflects USDC-denominated, Polygon-settled conditional tokens rather than a view on the weather itself, so the key question is whether today’s official Hong Kong Observatory reading lands in the contract’s specified band once the daily extract is finalised.

For context, Hong Kong is already in a hot spell: the Hong Kong Observatory’s seasonal outlook says June to August 2026 should be **above-normal** in temperature, and AccuWeather’s June forecast shows highs clustered around the low 30s Celsius, which is consistent with a summer baseline rather than an extreme outlier.[2][1] Recent reporting also shows the city has already posted a 2026 high of **34.6°C**, underlining that the upper 30s are in play when a hot ridge builds over southern China.[6] In that sense, a 0% price mainly says traders currently see the target range as unlikely *today*, not that heat risk is absent.

The main catalysts are the Hong Kong Observatory’s daytime forecast updates and the final “Absolute Daily Max (deg. C)” entry in the daily extract, because that is the settlement source and the market cannot resolve until the record is published.[5] Traders should also watch the Observatory’s station-specific maximum-temperature pages, which can move with late-day heating, and any official heat warnings or seasonal commentary that may reset expectations for the afternoon peak.[7][2]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Hong Kong on June 22? 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

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?

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.

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.