Official Hong Kong Observatory measurements recorded a daily maximum temperature of 31°C on May 21, establishing the clear market consensus at that precise outcome. This aligns with typical late-spring conditions in the region, where daytime heating under southerly flows and urban heat island effects often pushes highs into the low 30s amid rising seasonal averages around 29–32°C. Recent climate trends, including a documented long-term warming of about 1.7°C since the industrial era, support elevated readings consistent with normal-to-above-normal May forecasts from the Observatory. The market’s near-certain pricing reflects trader recognition of verified station data from key sites like King’s Park, with limited upside risk from minor forecast revisions or microclimate variations that rarely exceed 1–2°C in official records.
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 May 21?
Highest temperature in Hong Kong on May 21?
31°C 100.0%
22°C or below <1%
23°C <1%
24°C <1%
$275,004 Vol.
$275,004 Vol.
May 21, 2026
22°C or below
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C
No
28°C
No
29°C
No
30°C
No
31°C
Yes
32°C or higher
No
31°C 100.0%
22°C or below <1%
23°C <1%
24°C <1%
$275,004 Vol.
$275,004 Vol.
May 21, 2026
22°C or below
$2,447 Vol.
No
23°C
$2,956 Vol.
No
24°C
$4,005 Vol.
No
25°C
$3,473 Vol.
No
26°C
$4,503 Vol.
No
27°C
$30,786 Vol.
No
28°C
$35,869 Vol.
No
29°C
$28,543 Vol.
No
30°C
$48,471 Vol.
No
31°C
$56,789 Vol.
Yes
32°C or higher
$57,161 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 21 May '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.Official Hong Kong Observatory measurements recorded a daily maximum temperature of 31°C on May 21, establishing the clear market consensus at that precise outcome. This aligns with typical late-spring conditions in the region, where daytime heating under southerly flows and urban heat island effects often pushes highs into the low 30s amid rising seasonal averages around 29–32°C. Recent climate trends, including a documented long-term warming of about 1.7°C since the industrial era, support elevated readings consistent with normal-to-above-normal May forecasts from the Observatory. The market’s near-certain pricing reflects trader recognition of verified station data from key sites like King’s Park, with limited upside risk from minor forecast revisions or microclimate variations that rarely exceed 1–2°C in official records.
This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 21 May '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: May 19, 2026, 12:07 AM ET
Volume
$275,004End Date
May 21, 2026Market Opened
May 19, 2026, 12:07 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 21 May '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.Official Hong Kong Observatory measurements recorded a daily maximum temperature of 31°C on May 21, establishing the clear market consensus at that precise outcome. This aligns with typical late-spring conditions in the region, where daytime heating under southerly flows and urban heat island effects often pushes highs into the low 30s amid rising seasonal averages around 29–32°C. Recent climate trends, including a documented long-term warming of about 1.7°C since the industrial era, support elevated readings consistent with normal-to-above-normal May forecasts from the Observatory. The market’s near-certain pricing reflects trader recognition of verified station data from key sites like King’s Park, with limited upside risk from minor forecast revisions or microclimate variations that rarely exceed 1–2°C in official records.
This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 21 May '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
$275,004End Date
May 21, 2026Market Opened
May 19, 2026, 12:07 AM ETResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official Hong Kong Observatory measurements recorded a daily maximum temperature of 31°C on May 21, establishing the clear market consensus at that precise outcome. This aligns with typical late-spring conditions in the region, where daytime heating under southerly flows and urban heat island effects often pushes highs into the low 30s amid rising seasonal averages around 29–32°C. Recent climate trends, including a documented long-term warming of about 1.7°C since the industrial era, support elevated readings consistent with normal-to-above-normal May forecasts from the Observatory. The market’s near-certain pricing reflects trader recognition of verified station data from key sites like King’s Park, with limited upside risk from minor forecast revisions or microclimate variations that rarely exceed 1–2°C in official records.
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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