Official forecasts from the Shanghai Meteorological Observatory and international models converged on a daily maximum of 31°C for August 30, 2026, supported by observed station readings reaching 31.7–31.8°C amid persistent cloud cover, scattered showers, and southeast winds of 4–5 on the Beaufort scale. High humidity near 85–90% and moderate Atlantic-influenced steering patterns suppressed further warming, consistent with late-summer climatology for the Yangtze River Delta. Trader consensus at near-100% implied probability for exactly 31°C reflects real-time alignment between official measurements and model guidance, with limited room for upward revision unless a localized heat spike or station-specific reading exceeds thresholds.
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 30?
31°C 100.0%
26°C or below <1%
27°C <1%
28°C <1%
$79,447 Vol.
$79,447 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%
$79,447 Vol.
$79,447 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 for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the 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 28, 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 for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the 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 Observatory and international models converged on a daily maximum of 31°C for August 30, 2026, supported by observed station readings reaching 31.7–31.8°C amid persistent cloud cover, scattered showers, and southeast winds of 4–5 on the Beaufort scale. High humidity near 85–90% and moderate Atlantic-influenced steering patterns suppressed further warming, consistent with late-summer climatology for the Yangtze River Delta. Trader consensus at near-100% implied probability for exactly 31°C reflects real-time alignment between official measurements and model guidance, with limited room for upward revision unless a localized heat spike or station-specific reading exceeds thresholds.
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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