Hong Kong Observatory's verified observations confirm the highest air temperature reached exactly 28°C on May 11, 2026, at the Observatory headquarters, measured per World Meteorological Organization standards at 1.5 meters above ground in a shaded, ventilated shelter—driving unanimous trader consensus with 100% implied probability on this outcome. Mid-May climatology in Hong Kong typically sees maximums of 28–29°C under subtropical ridge influence, with urban heat island amplification and soil moisture from prior rainy days capping extremes amid normal to above-normal seasonal forecasts. Model ensembles and regional station data corroborated this peak during brief clearer intervals. Realistic challenges would demand a rare data correction from quality-controlled archives or an overlooked remote station outlier exceeding headquarters readings, improbable given comprehensive end-of-day validation.
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 11?
28°C 100.0%
20°C or below <1%
21°C <1%
22°C <1%
$265,117 Vol.
$265,117 Vol.
20°C or below
No
21°C
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 or higher
No
28°C 100.0%
20°C or below <1%
21°C <1%
22°C <1%
$265,117 Vol.
$265,117 Vol.
20°C or below
No
21°C
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 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: May 9, 2026, 3:10 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 verified observations confirm the highest air temperature reached exactly 28°C on May 11, 2026, at the Observatory headquarters, measured per World Meteorological Organization standards at 1.5 meters above ground in a shaded, ventilated shelter—driving unanimous trader consensus with 100% implied probability on this outcome. Mid-May climatology in Hong Kong typically sees maximums of 28–29°C under subtropical ridge influence, with urban heat island amplification and soil moisture from prior rainy days capping extremes amid normal to above-normal seasonal forecasts. Model ensembles and regional station data corroborated this peak during brief clearer intervals. Realistic challenges would demand a rare data correction from quality-controlled archives or an overlooked remote station outlier exceeding headquarters readings, improbable given comprehensive end-of-day validation.
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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