Hong Kong Observatory's official observations confirm the highest air temperature on April 28, 2026, reached 29°C at the King's Park station, using calibrated thermometers in standard Stevenson screens, solidifying trader consensus at 100% implied probability for this outcome as the market resolves. This aligns with hourly readings showing peaks near 29°C amid mainly cloudy conditions, isolated showers, and moderate easterly winds suppressing extremes beyond seasonal norms for late April, where mean maximums typically hover around 27–28°C. While inherent measurement uncertainties exist, revisions are exceedingly rare post-initial verification; only an official HKO audit uncovering a higher reading at another station or data anomaly could challenge it, though current reports across sites like Kowloon City show no such exceedance.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Hong Kong on April 28?
Highest temperature in Hong Kong on April 28?
29°C 100.0%
21°C or below <1%
22°C <1%
23°C <1%
$550,032 Vol.
$550,032 Vol.
Apr 28, 2026
21°C or below
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C
No
28°C
No
29°C
Yes
30°C
No
31°C or higher
No
29°C 100.0%
21°C or below <1%
22°C <1%
23°C <1%
$550,032 Vol.
$550,032 Vol.
Apr 28, 2026
21°C or below
$8,962 Vol.
No
22°C
$12,516 Vol.
No
23°C
$17,427 Vol.
No
24°C
$12,442 Vol.
No
25°C
$14,728 Vol.
No
26°C
$78,828 Vol.
No
27°C
$83,549 Vol.
No
28°C
$67,723 Vol.
No
29°C
$193,106 Vol.
Yes
30°C
$42,060 Vol.
No
31°C or higher
$18,689 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 28 Apr '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
This market can not resolve to "Yes" until data for this date has been finalized.
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 to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.Hong Kong Observatory's official observations confirm the highest air temperature on April 28, 2026, reached 29°C at the King's Park station, using calibrated thermometers in standard Stevenson screens, solidifying trader consensus at 100% implied probability for this outcome as the market resolves. This aligns with hourly readings showing peaks near 29°C amid mainly cloudy conditions, isolated showers, and moderate easterly winds suppressing extremes beyond seasonal norms for late April, where mean maximums typically hover around 27–28°C. While inherent measurement uncertainties exist, revisions are exceedingly rare post-initial verification; only an official HKO audit uncovering a higher reading at another station or data anomaly could challenge it, though current reports across sites like Kowloon City show no such exceedance.
This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 28 Apr '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
This market can not resolve to "Yes" until data for this date has been finalized.
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 to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
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
This market can not resolve to "Yes" until data for this date has been finalized.
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 to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: Apr 26, 2026, 12:43 AM ET
Volume
$550,032End Date
Apr 28, 2026Market Opened
Apr 26, 2026, 12:43 AM ETResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 28 Apr '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
This market can not resolve to "Yes" until data for this date has been finalized.
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 to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.Hong Kong Observatory's official observations confirm the highest air temperature on April 28, 2026, reached 29°C at the King's Park station, using calibrated thermometers in standard Stevenson screens, solidifying trader consensus at 100% implied probability for this outcome as the market resolves. This aligns with hourly readings showing peaks near 29°C amid mainly cloudy conditions, isolated showers, and moderate easterly winds suppressing extremes beyond seasonal norms for late April, where mean maximums typically hover around 27–28°C. While inherent measurement uncertainties exist, revisions are exceedingly rare post-initial verification; only an official HKO audit uncovering a higher reading at another station or data anomaly could challenge it, though current reports across sites like Kowloon City show no such exceedance.
This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 28 Apr '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
This market can not resolve to "Yes" until data for this date has been finalized.
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 to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
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
This market can not resolve to "Yes" until data for this date has been finalized.
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 to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Volume
$550,032End Date
Apr 28, 2026Market Opened
Apr 26, 2026, 12:43 AM ETResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Hong Kong Observatory's official observations confirm the highest air temperature on April 28, 2026, reached 29°C at the King's Park station, using calibrated thermometers in standard Stevenson screens, solidifying trader consensus at 100% implied probability for this outcome as the market resolves. This aligns with hourly readings showing peaks near 29°C amid mainly cloudy conditions, isolated showers, and moderate easterly winds suppressing extremes beyond seasonal norms for late April, where mean maximums typically hover around 27–28°C. While inherent measurement uncertainties exist, revisions are exceedingly rare post-initial verification; only an official HKO audit uncovering a higher reading at another station or data anomaly could challenge it, though current reports across sites like Kowloon City show no such exceedance.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions