Confirmed observations from Guangzhou Baiyun International Airport's official station, per China Meteorological Administration protocols and Wunderground data, recorded a peak temperature of 31°C during the early afternoon of May 11, driving the market's near-unanimous 100% implied probability on this outcome as diurnal cooling sets in. This aligns with consensus from ECMWF and GFS forecast models, which projected highs near 31°C amid typical subtropical monsoon conditions—high humidity, partial cloud cover, and moderate winds suppressing further intensification—consistent with historical May averages of 29–30°C. Realistic challenges include a rare late-afternoon heat burst from enhanced solar insolation or urban heat island effects, though evening hourly readings already declining to 28°C minimize this risk; final CMA verification expected overnight.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Guangzhou on May 11?
31°C 100.0%
25°C or below <1%
26°C <1%
27°C <1%
$65,593 Vol.
$65,593 Vol.
25°C or below
No
26°C
No
27°C
No
28°C
No
29°C
No
30°C
No
31°C
Yes
32°C
No
33°C
No
34°C
No
35°C or higher
No
31°C 100.0%
25°C or below <1%
26°C <1%
27°C <1%
$65,593 Vol.
$65,593 Vol.
25°C or below
No
26°C
No
27°C
No
28°C
No
29°C
No
30°C
No
31°C
Yes
32°C
No
33°C
No
34°C
No
35°C or higher
No
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Guangzhou Baiyun International Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/cn/guangzhou/ZGGG.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°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, 4:42 AM ET
Resolution Source
https://www.wunderground.com/history/daily/cn/guangzhou/ZGGGResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Guangzhou Baiyun International Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/cn/guangzhou/ZGGG.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve to "Yes" until all data for this date has been finalized.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°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.
Resolution Source
https://www.wunderground.com/history/daily/cn/guangzhou/ZGGGResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Confirmed observations from Guangzhou Baiyun International Airport's official station, per China Meteorological Administration protocols and Wunderground data, recorded a peak temperature of 31°C during the early afternoon of May 11, driving the market's near-unanimous 100% implied probability on this outcome as diurnal cooling sets in. This aligns with consensus from ECMWF and GFS forecast models, which projected highs near 31°C amid typical subtropical monsoon conditions—high humidity, partial cloud cover, and moderate winds suppressing further intensification—consistent with historical May averages of 29–30°C. Realistic challenges include a rare late-afternoon heat burst from enhanced solar insolation or urban heat island effects, though evening hourly readings already declining to 28°C minimize this risk; final CMA verification expected overnight.
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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