Recent forecast model runs from major agencies show Shanghai's June 26 daytime high most likely settling in the narrow 27–29 °C range under typical early-summer East Asian monsoon conditions, with the 28 °C outcome edging ahead on the basis of ensemble means. Key differentiating variables include the strength and position of the subtropical high, which modulates daytime solar heating and afternoon sea-breeze cooling from the East China Sea, plus variable low-level moisture that can either suppress or enhance maximum temperatures by a degree or two. Urban heat-island effects around the city center add a small but consistent positive bias to official station readings. New GFS and ECMWF updates expected within 24–48 hours remain the next catalyst likely to shift the tight clustering of market-implied probabilities.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Shanghai on June 26?
27°C 100.0%
23°C or below <1%
24°C <1%
25°C <1%
$149,625 Vol.
$149,625 Vol.
23°C or below
No
24°C
No
25°C
No
26°C
No
27°C
Yes
28°C
No
29°C
No
30°C
No
31°C
No
32°C
No
33°C or higher
No
27°C 100.0%
23°C or below <1%
24°C <1%
25°C <1%
$149,625 Vol.
$149,625 Vol.
23°C or below
No
24°C
No
25°C
No
26°C
No
27°C
Yes
28°C
No
29°C
No
30°C
No
31°C
No
32°C
No
33°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 for the Shanghai Pudong International Airport Station, available here: https://www.wunderground.com/history/daily/cn/shanghai/ZSPD.
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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Jun 24, 2026, 12:03 AM ET
Resolution Source
https://www.wunderground.com/history/daily/cn/shanghai/ZSPDResolver
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 for the Shanghai Pudong International Airport Station, available here: https://www.wunderground.com/history/daily/cn/shanghai/ZSPD.
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 until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Resolution Source
https://www.wunderground.com/history/daily/cn/shanghai/ZSPDResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Recent forecast model runs from major agencies show Shanghai's June 26 daytime high most likely settling in the narrow 27–29 °C range under typical early-summer East Asian monsoon conditions, with the 28 °C outcome edging ahead on the basis of ensemble means. Key differentiating variables include the strength and position of the subtropical high, which modulates daytime solar heating and afternoon sea-breeze cooling from the East China Sea, plus variable low-level moisture that can either suppress or enhance maximum temperatures by a degree or two. Urban heat-island effects around the city center add a small but consistent positive bias to official station readings. New GFS and ECMWF updates expected within 24–48 hours remain the next catalyst likely to shift the tight clustering of market-implied probabilities.
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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