Latest numerical weather prediction ensembles from the China Meteorological Administration have converged on a 31°C daily maximum for Chengdu on May 17, establishing this outcome as the market’s near-certain resolution. A strengthening subtropical ridge over the Sichuan Basin has delivered clear skies and light northeasterly winds that enhance daytime solar heating well above the late-May climatological average of 27–28°C. With afternoon observations now concluding and no significant model divergence remaining, traders assign overwhelming probability to the 31°C range. Only an unexpected late-day surge in cloud cover or a sharp shift in steering flow could realistically push the recorded high outside this narrow band before official verification.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Chengdu on May 17?
31°C 100.0%
23°C or below <1%
24°C <1%
25°C <1%
$66,826 Vol.
$66,826 Vol.
23°C or below
<1%
24°C
<1%
25°C
<1%
26°C
<1%
27°C
<1%
28°C
<1%
29°C
<1%
30°C
<1%
31°C
100%
32°C
<1%
33°C or higher
<1%
31°C 100.0%
23°C or below <1%
24°C <1%
25°C <1%
$66,826 Vol.
$66,826 Vol.
23°C or below
<1%
24°C
<1%
25°C
<1%
26°C
<1%
27°C
<1%
28°C
<1%
29°C
<1%
30°C
<1%
31°C
100%
32°C
<1%
33°C or higher
<1%
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 Chengdu Shuangliu International Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/cn/chengdu/ZUUU.
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 15, 2026, 12:05 AM ET
Resolution Source
https://www.wunderground.com/history/daily/cn/chengdu/ZUUUThe 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 Chengdu Shuangliu International Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/cn/chengdu/ZUUU.
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/chengdu/ZUUULatest numerical weather prediction ensembles from the China Meteorological Administration have converged on a 31°C daily maximum for Chengdu on May 17, establishing this outcome as the market’s near-certain resolution. A strengthening subtropical ridge over the Sichuan Basin has delivered clear skies and light northeasterly winds that enhance daytime solar heating well above the late-May climatological average of 27–28°C. With afternoon observations now concluding and no significant model divergence remaining, traders assign overwhelming probability to the 31°C range. Only an unexpected late-day surge in cloud cover or a sharp shift in steering flow could realistically push the recorded high outside this narrow band before official verification.
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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