Hong Kong Observatory (HKO) observations confirm the highest air temperature reached 27°C this afternoon at the standard measurement site, exceeding the 25°C threshold and solidifying trader consensus at 100% implied probability for "25°C or higher" as evening readings cool to 23°C amid typical diurnal cycles. This positioning reflects subtropical late-April climatology, with historical daily maxima averaging 26-28°C under high solar insolation and light easterly winds, bolstered by HKO's recent 9-day forecast projecting 25-28°C in stable high-pressure conditions following an unseasonably warm March. Realistic challenges are minimal—only an unprecedented instrument malfunction or data revision before the official daily summary could shift outcomes, though HKO's Stevenson screen protocols ensure reliability.
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 30?
Highest temperature in Hong Kong on April 30?
25°C or higher 100.0%
15°C or below <1%
16°C <1%
17°C <1%
$305,179 Vol.
$305,179 Vol.
15°C or below
<1%
16°C
<1%
17°C
<1%
18°C
<1%
19°C
<1%
20°C
<1%
21°C
<1%
22°C
<1%
23°C
<1%
24°C
<1%
25°C or higher
100%
25°C or higher 100.0%
15°C or below <1%
16°C <1%
17°C <1%
$305,179 Vol.
$305,179 Vol.
15°C or below
<1%
16°C
<1%
17°C
<1%
18°C
<1%
19°C
<1%
20°C
<1%
21°C
<1%
22°C
<1%
23°C
<1%
24°C
<1%
25°C or higher
100%
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 28, 2026, 1:15 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 (HKO) observations confirm the highest air temperature reached 27°C this afternoon at the standard measurement site, exceeding the 25°C threshold and solidifying trader consensus at 100% implied probability for "25°C or higher" as evening readings cool to 23°C amid typical diurnal cycles. This positioning reflects subtropical late-April climatology, with historical daily maxima averaging 26-28°C under high solar insolation and light easterly winds, bolstered by HKO's recent 9-day forecast projecting 25-28°C in stable high-pressure conditions following an unseasonably warm March. Realistic challenges are minimal—only an unprecedented instrument malfunction or data revision before the official daily summary could shift outcomes, though HKO's Stevenson screen protocols ensure reliability.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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