Official forecasts from the Shanghai Meteorological Bureau and supporting model consensus indicate a daily maximum of 31°C under prevailing high-pressure conditions and moderate easterly flow typical for late August in the Yangtze River Delta. Real-time observations through midday have tracked closely with this projection amid partly cloudy skies and humidity levels near 70-80%, aligning with seasonal climatology where late-summer peaks often stabilize around this threshold absent strong frontal systems. Trader positioning reflects high confidence in these authoritative measurements resolving the market, though localized urban heat island effects or minor forecast revisions from afternoon convection could theoretically shift the recorded high by 1°C at monitoring stations.
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 August 29?
31°C 100.0%
26°C or below <1%
27°C <1%
28°C <1%
$70,750 Vol.
$70,750 Vol.
26°C or below
<1%
27°C
<1%
28°C
<1%
29°C
<1%
30°C
<1%
31°C
100%
32°C
<1%
33°C
<1%
34°C
<1%
35°C
<1%
36°C or higher
<1%
31°C 100.0%
26°C or below <1%
27°C <1%
28°C <1%
$70,750 Vol.
$70,750 Vol.
26°C or below
<1%
27°C
<1%
28°C
<1%
29°C
<1%
30°C
<1%
31°C
100%
32°C
<1%
33°C
<1%
34°C
<1%
35°C
<1%
36°C or higher
<1%
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=zspd
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Aug 27, 2026, 12:56 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=zspdResolver
0x69c47De9D...The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=zspd
If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Resolution Source
https://www.weather.gov/wrh/timeseries?site=zspdResolver
0x69c47De9D...Official forecasts from the Shanghai Meteorological Bureau and supporting model consensus indicate a daily maximum of 31°C under prevailing high-pressure conditions and moderate easterly flow typical for late August in the Yangtze River Delta. Real-time observations through midday have tracked closely with this projection amid partly cloudy skies and humidity levels near 70-80%, aligning with seasonal climatology where late-summer peaks often stabilize around this threshold absent strong frontal systems. Trader positioning reflects high confidence in these authoritative measurements resolving the market, though localized urban heat island effects or minor forecast revisions from afternoon convection could theoretically shift the recorded high by 1°C at monitoring stations.
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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