Highest temperature in Hong Kong on July 27?

Platform comparison

Market context

Hong Kong’s temperature reading on 27 July will be taken from the Hong Kong Observatory’s daily extract once the day is complete, so the market is really a wager on the afternoon maximum rather than the morning conditions. The current crowd-implied probability of 0% for **YES** suggests traders are not yet pricing in a specific temperature band, which is typical when the contract depends on a single official observation published after the fact.[3]

For context, Hong Kong’s late-July climate is usually hot, humid and storm-prone, but cloud cover and rain can suppress the day’s high. July averages are still warm, with daily highs around 89°F, or about 31.7°C, and the city’s weather service has recently issued thunderstorm warnings for isolated squally thunderstorms over Hong Kong, a reminder that convective weather can materially affect the maximum temperature.[4][2] In a comparable Hong Kong July temperature market that has already resolved, the Hong Kong Observatory confirmed a 30°C daily maximum and the contract paid out at the 30°C band, showing how tightly these markets track the official decimal reading rather than a rounded headline.[5]

The main catalyst traders should watch is the Hong Kong Observatory’s final “Daily Extract” for 27 July, because the contract cannot resolve until that data is published.[3] Any late-day change in cloud, rain or thunderstorm coverage is the relevant driver, not political-style events or scheduled announcements; the market is leaning entirely on the official temperature print from the observatory, with the settlement source and timing set out in the market terms.[3][2]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Highest temperature in Hong Kong on July 27? plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

FAQ

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

Can prediction markets influence election outcomes?

Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

Are political prediction markets legal in my country?

It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.

Why do Polymarket and Kalshi differ on elections?

Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.