Latest forecast guidance from the China Meteorological Administration and global models points to a daily maximum of 28–29 °C in Chengdu on May 17, driven by a strengthening subtropical high that favors clear skies and strong daytime insolation over the Sichuan Basin. This setup produces modest afternoon warming, with surface temperatures moderated by the region’s typical spring humidity and light southerly flow. Historical May climatology shows mean highs near 27 °C, placing the current consensus slightly above average yet well short of heat-wave thresholds. Minor model spread in boundary-layer mixing and cloud cover keeps adjacent outcomes—27 °C and 30 °C—viable until the final overnight runs and morning observations arrive.
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?
29°C 32%
28°C 22%
27°C 18%
30°C 14%
$16,022 Vol.
$16,022 Vol.
23°C or below
<1%
24°C
<1%
25°C
1%
26°C
5%
27°C
18%
28°C
22%
29°C
32%
30°C
14%
31°C
6%
32°C
1%
33°C or higher
<1%
29°C 32%
28°C 22%
27°C 18%
30°C 14%
$16,022 Vol.
$16,022 Vol.
23°C or below
<1%
24°C
<1%
25°C
1%
26°C
5%
27°C
18%
28°C
22%
29°C
32%
30°C
14%
31°C
6%
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 forecast guidance from the China Meteorological Administration and global models points to a daily maximum of 28–29 °C in Chengdu on May 17, driven by a strengthening subtropical high that favors clear skies and strong daytime insolation over the Sichuan Basin. This setup produces modest afternoon warming, with surface temperatures moderated by the region’s typical spring humidity and light southerly flow. Historical May climatology shows mean highs near 27 °C, placing the current consensus slightly above average yet well short of heat-wave thresholds. Minor model spread in boundary-layer mixing and cloud cover keeps adjacent outcomes—27 °C and 30 °C—viable until the final overnight runs and morning observations arrive.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated

Beware of external links.
Beware of external links.
Frequently Asked Questions