Official observations from Shanghai's benchmark Xujiahui meteorological station, managed by the China Meteorological Administration, recorded a peak temperature of 18°C on April 15 amid persistent cloud cover and northerly winds that suppressed daytime heating, consistent with a recent cold frontal pattern affecting eastern China. Hourly data through late afternoon showed no exceedance, with model ensembles from ECMWF and GFS aligning post-event to validate this outcome against historical mid-April averages near 19°C. Trader consensus at 100% implied probability reflects this verified evidence, as the resolution window closes. Realistic challenges include minor data revisions from peripheral stations like Pudong or urban heat island effects in preliminary reports, though current trajectories make higher readings improbable. Final CMA daily summary expected within 24 hours.
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 April 15?
Highest temperature in Shanghai on April 15?
18°C 100.0%
10°C or below <1%
11°C <1%
12°C <1%
$252,947 Vol.
$252,947 Vol.
10°C or below
No
11°C
No
12°C
No
13°C
No
14°C
No
15°C
No
16°C
No
17°C
No
18°C
Yes
19°C
No
20°C or higher
No
18°C 100.0%
10°C or below <1%
11°C <1%
12°C <1%
$252,947 Vol.
$252,947 Vol.
10°C or below
No
11°C
No
12°C
No
13°C
No
14°C
No
15°C
No
16°C
No
17°C
No
18°C
Yes
19°C
No
20°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: Apr 13, 2026, 12:31 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
Official observations from Shanghai's benchmark Xujiahui meteorological station, managed by the China Meteorological Administration, recorded a peak temperature of 18°C on April 15 amid persistent cloud cover and northerly winds that suppressed daytime heating, consistent with a recent cold frontal pattern affecting eastern China. Hourly data through late afternoon showed no exceedance, with model ensembles from ECMWF and GFS aligning post-event to validate this outcome against historical mid-April averages near 19°C. Trader consensus at 100% implied probability reflects this verified evidence, as the resolution window closes. Realistic challenges include minor data revisions from peripheral stations like Pudong or urban heat island effects in preliminary reports, though current trajectories make higher readings improbable. Final CMA daily summary expected within 24 hours.
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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