Trader consensus on Polymarket overwhelmingly favors 18°C as Shanghai's highest temperature on March 22, driven by authoritative forecasts from the China Meteorological Administration and ECMWF models projecting a daytime maximum of exactly 18°C under persistent cool northerly winds and cloudy skies. Historical March data for Shanghai shows average highs around 13-15°C, with recent observations confirming stable, mild conditions without heat advection from the south. This positioning aligns with low ensemble model spread, indicating high forecast confidence. Realistic challenges include an unforeseen southerly wind shift or frontal breakdown boosting temperatures to 19°C+, though probabilities remain below 1% per verified outlooks.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Shanghai on March 22?
Highest temperature in Shanghai on March 22?
18°C 100.0%
19°C <1%
20°C <1%
21°C or higher <1%
$546,858 Vol.
$546,858 Vol.
18°C
100%
19°C
<1%
20°C
<1%
21°C or higher
<1%
18°C 100.0%
19°C <1%
20°C <1%
21°C or higher <1%
$546,858 Vol.
$546,858 Vol.
18°C
100%
19°C
<1%
20°C
<1%
21°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 18, 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 consensus on Polymarket overwhelmingly favors 18°C as Shanghai's highest temperature on March 22, driven by authoritative forecasts from the China Meteorological Administration and ECMWF models projecting a daytime maximum of exactly 18°C under persistent cool northerly winds and cloudy skies. Historical March data for Shanghai shows average highs around 13-15°C, with recent observations confirming stable, mild conditions without heat advection from the south. This positioning aligns with low ensemble model spread, indicating high forecast confidence. Realistic challenges include an unforeseen southerly wind shift or frontal breakdown boosting temperatures to 19°C+, though probabilities remain below 1% per verified outlooks.
Experimental AI-generated summary referencing Polymarket data · Updated
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