Hong Kong Observatory's official observational data confirms the highest temperature on April 4, 2026, reached exactly 26°C at its reference station, anchoring trader consensus at a 99.4% market-implied probability for this outcome amid cloudy skies and showers. A low-pressure trough triggered HKO's thunderstorm warning early that morning, delivering heavy rain and gusty winds that capped daytime heating well below initial forecasts of potential 27°C peaks, aligning with April's climatological mean maximum of around 25.5°C despite the seasonal outlook for normal to above-normal temperatures. With verified measurements from automated stations finalized, realistic challenges are negligible—only an extraordinary data audit uncovering a overlooked higher reading could shift odds, a scenario without precedent in HKO's rigorous real-time monitoring protocols.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Hong Kong on April 4?
Highest temperature in Hong Kong on April 4?
26°C 99.4%
25°C <1%
27°C <1%
19°C or below <1%
$163,646 Vol.
$163,646 Vol.
19°C or below
<1%
20°C
<1%
21°C
<1%
22°C
<1%
23°C
<1%
24°C
<1%
25°C
<1%
26°C
99%
27°C
<1%
28°C
<1%
29°C or higher
<1%
26°C 99.4%
25°C <1%
27°C <1%
19°C or below <1%
$163,646 Vol.
$163,646 Vol.
19°C or below
<1%
20°C
<1%
21°C
<1%
22°C
<1%
23°C
<1%
24°C
<1%
25°C
<1%
26°C
99%
27°C
<1%
28°C
<1%
29°C or higher
<1%
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: Mar 29, 2026, 3:14 PM ET
Resolver
0x69c47De9D...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...Hong Kong Observatory's official observational data confirms the highest temperature on April 4, 2026, reached exactly 26°C at its reference station, anchoring trader consensus at a 99.4% market-implied probability for this outcome amid cloudy skies and showers. A low-pressure trough triggered HKO's thunderstorm warning early that morning, delivering heavy rain and gusty winds that capped daytime heating well below initial forecasts of potential 27°C peaks, aligning with April's climatological mean maximum of around 25.5°C despite the seasonal outlook for normal to above-normal temperatures. With verified measurements from automated stations finalized, realistic challenges are negligible—only an extraordinary data audit uncovering a overlooked higher reading could shift odds, a scenario without precedent in HKO's rigorous real-time monitoring protocols.
Experimental AI-generated summary referencing Polymarket data · Updated
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