Trader sentiment for Shanghai's highest temperature on March 21 clusters tightly around 14°C (30.5%), 15°C (28.0%), and 16°C (21.5%), driven by the latest ECMWF and GFS ensemble forecasts projecting daytime highs in this narrow 14-16°C band amid mild spring conditions. Differentiating factors include model spread from lingering cool northerly winds post-frontal passage, partial cloud cover suppressing peaks, and Shanghai's urban heat island effect adding 1-2°C above rural baselines. Historical March 21 highs average 13-14°C with standard deviations of ±3°C, amplifying uncertainty; traders await CMA hourly updates, as small shifts in boundary layer mixing could tip outcomes between these leaders.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Shanghai on March 21?
Highest temperature in Shanghai on March 21?
14°C 31%
15°C 28%
16°C 22%
17°C 8%
$23,562 Vol.
$23,562 Vol.
10°C or below
<1%
11°C
1%
12°C
2%
13°C
6%
14°C
31%
15°C
28%
16°C
22%
17°C
8%
18°C
2%
19°C
1%
20°C or higher
<1%
14°C 31%
15°C 28%
16°C 22%
17°C 8%
$23,562 Vol.
$23,562 Vol.
10°C or below
<1%
11°C
1%
12°C
2%
13°C
6%
14°C
31%
15°C
28%
16°C
22%
17°C
8%
18°C
2%
19°C
1%
20°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 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: Mar 17, 2026, 6:02 AM ET
Resolution Source
https://www.wunderground.com/history/daily/cn/shanghai/ZSPDResolver
0x69c47De9D...Resolution Source
https://www.wunderground.com/history/daily/cn/shanghai/ZSPDResolver
0x69c47De9D...Trader sentiment for Shanghai's highest temperature on March 21 clusters tightly around 14°C (30.5%), 15°C (28.0%), and 16°C (21.5%), driven by the latest ECMWF and GFS ensemble forecasts projecting daytime highs in this narrow 14-16°C band amid mild spring conditions. Differentiating factors include model spread from lingering cool northerly winds post-frontal passage, partial cloud cover suppressing peaks, and Shanghai's urban heat island effect adding 1-2°C above rural baselines. Historical March 21 highs average 13-14°C with standard deviations of ±3°C, amplifying uncertainty; traders await CMA hourly updates, as small shifts in boundary layer mixing could tip outcomes between these leaders.
Experimental AI-generated summary referencing Polymarket data · Updated
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