Hong Kong Observatory's official observational data confirms the highest air temperature reached 28°C on April 17 at the Observatory headquarters, driving trader consensus to 100% implied probability amid mostly fine weather with light winds and ample sunshine boosting daytime heating. This aligns with automated weather station readings from the HKO network, which use shaded thermometers for precise maximum temperature measurements under World Meteorological Organization standards. April climatology supports such warmth, with mean maximums around 27–29°C recently amid above-normal regional trends. Realistic challenges are minimal post-confirmation—only a rare data audit revealing sensor malfunction could prompt revision, though HKO's quality controls make this improbable; markets await any final archival updates.
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 17?
28°C 100.0%
21°C or below <1%
22°C <1%
23°C <1%
$431,168 Vol.
$431,168 Vol.
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
Yes
29°C
No
30°C
No
31°C or higher
No
28°C 100.0%
21°C or below <1%
22°C <1%
23°C <1%
$431,168 Vol.
$431,168 Vol.
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
Yes
29°C
No
30°C
No
31°C or higher
No
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 15, 2026, 12:06 AM ET
Resolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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.
Resolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Hong Kong Observatory's official observational data confirms the highest air temperature reached 28°C on April 17 at the Observatory headquarters, driving trader consensus to 100% implied probability amid mostly fine weather with light winds and ample sunshine boosting daytime heating. This aligns with automated weather station readings from the HKO network, which use shaded thermometers for precise maximum temperature measurements under World Meteorological Organization standards. April climatology supports such warmth, with mean maximums around 27–29°C recently amid above-normal regional trends. Realistic challenges are minimal post-confirmation—only a rare data audit revealing sensor malfunction could prompt revision, though HKO's quality controls make this improbable; markets await any final archival updates.
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