Trader consensus on Polymarket overwhelmingly favors a lowest temperature of 10°C in Shanghai on May 1, driven by confirmed early morning observations from the China Meteorological Administration (CMA) stations, such as Xujiahui observatory, recording exactly 10°C amid a cooling trend following April 30's near-10°C minimum. This aligns with refined GFS and ECMWF ensemble forecasts initially projecting 11–13°C, influenced by northerly winds ushering cooler continental air and radiative cooling under partly cloudy skies. Urban heat island effects in densely built Shanghai limit further drops. Scenarios challenging this include prolonged clear skies and light winds overnight enabling sub-10°C radiative cooling, though diurnal heating and model consensus deem it improbable as the day progresses toward resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Shanghai on May 1?
10°C 100.0%
7°C or below <1%
8°C <1%
9°C <1%
$10,646 Vol.
$10,646 Vol.
7°C or below
No
8°C
No
9°C
No
10°C
Yes
11°C
No
12°C
No
13°C
No
14°C
No
15°C
No
16°C
No
17°C or higher
No
10°C 100.0%
7°C or below <1%
8°C <1%
9°C <1%
$10,646 Vol.
$10,646 Vol.
7°C or below
No
8°C
No
9°C
No
10°C
Yes
11°C
No
12°C
No
13°C
No
14°C
No
15°C
No
16°C
No
17°C or higher
No
The resolution source for this market will be information from Wunderground, specifically the lowest 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: Apr 29, 2026, 12:02 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 lowest 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 on Polymarket overwhelmingly favors a lowest temperature of 10°C in Shanghai on May 1, driven by confirmed early morning observations from the China Meteorological Administration (CMA) stations, such as Xujiahui observatory, recording exactly 10°C amid a cooling trend following April 30's near-10°C minimum. This aligns with refined GFS and ECMWF ensemble forecasts initially projecting 11–13°C, influenced by northerly winds ushering cooler continental air and radiative cooling under partly cloudy skies. Urban heat island effects in densely built Shanghai limit further drops. Scenarios challenging this include prolonged clear skies and light winds overnight enabling sub-10°C radiative cooling, though diurnal heating and model consensus deem it improbable as the day progresses toward resolution.
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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