Trader consensus has locked in a 100% implied probability for a highest temperature of 26°C in Shanghai today, driven by converged outputs from short-range weather models like ECMWF and GFS, alongside real-time observations from the Shanghai Meteorological Bureau's Xujiahui station registering a midday peak of 26°C under partly cloudy conditions. Moderate southerly winds and elevated humidity have capped solar heating, aligning with early May climatology where daily highs average 24–26°C amid transitioning spring patterns. Scenarios challenging this include an improbable late-afternoon clearing allowing 1–2°C of additional warming before sunset, but ensemble forecasts and current downward temperature trajectory render higher outcomes negligible, with official daily maximum confirmation pending evening reports.
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 May 13?
26°C 100.0%
21°C or below <1%
22°C <1%
23°C <1%
$391,434 Vol.
$391,434 Vol.
21°C or below
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
Yes
27°C
No
28°C
No
29°C
No
30°C
No
31°C or higher
No
26°C 100.0%
21°C or below <1%
22°C <1%
23°C <1%
$391,434 Vol.
$391,434 Vol.
21°C or below
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
Yes
27°C
No
28°C
No
29°C
No
30°C
No
31°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 Shanghai Pudong International Airport Station once information is finalized, 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 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 11, 2026, 1:21 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 by the Forecast for the Shanghai Pudong International Airport Station once information is finalized, 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 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/shanghai/ZSPDResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Trader consensus has locked in a 100% implied probability for a highest temperature of 26°C in Shanghai today, driven by converged outputs from short-range weather models like ECMWF and GFS, alongside real-time observations from the Shanghai Meteorological Bureau's Xujiahui station registering a midday peak of 26°C under partly cloudy conditions. Moderate southerly winds and elevated humidity have capped solar heating, aligning with early May climatology where daily highs average 24–26°C amid transitioning spring patterns. Scenarios challenging this include an improbable late-afternoon clearing allowing 1–2°C of additional warming before sunset, but ensemble forecasts and current downward temperature trajectory render higher outcomes negligible, with official daily maximum confirmation pending evening reports.
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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