Will the highest temperature in Hong Kong be 28°C on October 27?

Named source: weather.gov.hk · End date Oct 27, 8:00 AM ET · View rules on Polymarket (international site) ↗

The short version

Traders put the chance of the highest temperature in Hong Kong being 28°C on October 27 at less than 1%.

It dipped 4 points today, and there are too few orders waiting near the price to compare buy orders and sell orders.

Low surprise risk: the condition as written settles it.

Describes the price, the order book and the contract rules. It is research, not a recommendation.

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The details

Rule note: stated conditionSettled by weather.gov.hk

Fine-print risk

Low (0/100)

Stated Condition

Pro adds the exact price, today’s change in points, buyers vs sellers in dollars, the price chart and every recorded move. See Pro

Official source: settlement runs on Official election authority (weather.gov.hk). Publishes official results after the vote. No recorded moves for this market yet.
Fine print: Settles on the condition as written with an ET cutoff. Cutoff: Tue, Oct 27, 2026, 11:59 PM ET (date from market title) Deadline: Tue, Oct 27, 2026, 11:59 PM ET (date from market title). If a second venue lists the same question, compare its named source, cutoff time and timezone, and fallback.

Source named: weather.gov.hk (not a tracked official feed, no release history)

Standardized read of public order book, official-source and contract-rule data, identical for every viewer. It describes the data and is not a recommendation. The venue’s published rules control settlement.

Live price, chart & buyers vs sellersPro

Pro shows the exact price, the change in points, buyers vs sellers in dollars, the price history and every recorded move here.

See Pro

Will the highest temperature in Hong Kong be 28°C on October 27?

5-point rule check

Polymarket

Named source: weather.gov.hk

Fine-print risk: Low (0/100)

Source
Deadline
Counts as Yes
Backup rules
Other venues

Fine-print risk Low 0

Who settles it (official source)

Official election authority (weather.gov.hk) · https://www.weather.gov.hk/en/cis/climat.htm

Deadline and time zone

Tue, Oct 27, 2026, 11:59 PM ET (date from market title) America/New_York

What counts as Yes

Stated ConditionResolution condition as written: "This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 27 Oct '26."

Backup rules (delays, cancellations, revisions)

Any revisions published after the Hong Kong Observatory's initial publication of data for this market's timeframe will not be considered for this market's resolution. That initial publication is the revisions cutoff. In the case that the Resolution Source publishes data, sufficient to settle a Market, that is clearly erroneous and the result of technical or operational error, or of unauthorized interference with the Resolution Source or its data, the Market may remain open for a period of up to seven (7) calendar days (ET) from the time of the original release, in anticipation of a correction by the Resolution Source. If no corrected value is published within that period, Polymarket will issue a Clarification to determine whether the originally published value may be eligible for resolution, or whether other action is required to preserve the orderly functioning of the Market. Revisions remain subject to the cutoff above. The only exception is a correction of a clearly erroneous print under the preceding paragraph, which will be used even if published after the cutoff.

Fine print and other venues

Cross-venue & fine-print settlement trap: If a second venue lists the same question, compare its named source, cutoff time and timezone, and fallback; Polymarket disputes go to the UMA Optimistic Oracle while Kalshi follows CFTC-filed contract terms.

Rules text on file (Polymarket)

This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 27 Oct '26. The resolution source for this market will be information from the Hong Kong Observatory, specifically the "Absolute Daily Max (deg. C)" the specified date once information is finalized in the relevant "Daily Extract", available here: https://www.weather.gov.hk/en/cis/climat.htm In the event that there is no data for the observation date by 11:59 PM ET on the seventh day following the observation date, this market will resolve to the lowest bracket. This market will resolve once data for this date has been published on the resolution source, or by 11:59 PM ET on the seventh day following the observation date, whichever comes first. The resolution source for this market measures temperatures in Celsius to one decimal place (eg, 9.1°C). Thus, this is the level of precision that will be used when resolving the market. Any revisions published after the Hong Kong Observatory's initial publication of data for this market's timeframe will not be considered for this market's resolution. That initial publication is the revisions cutoff. In the case that the Resolution Source publishes data, sufficient to settle a Market, that is clearly erroneous and the result of technical or operational error, or of unauthorized interference with the Resolution Source or its data, the Market may remain open for a period of up to seven (7) calendar days (ET) from the time of the original release, in anticipation of a correction by the Resolution Source. If the Resolution Source publishes a corrected value within that period, that value will be eligible for resolution. If no corrected value is published within that period, Polymarket will issue a Clarification to determine whether the originally published value may be eligible for resolution, or whether other action is required to preserve the orderly functioning of the Market. Revisions remain subject to the cutoff above. The only exception is a correction of a clearly erroneous print under the preceding paragraph, which will be used even if published after the cutoff.

The short versioniA plain summary built from the live price, the order book and the contract rules, the same for every visitor.

The details

The short version