**Trader consensus at 100% on 22°C reflects official Shanghai meteorological observations recording a daily minimum near that threshold.** Subtropical monsoon conditions with northwest winds and partly cloudy skies produced typical overnight radiative cooling, aligning station readings from sites like Xujiahui (lowest near 21.4°C) with the market outcome. Multiple forecasts converged on lows of 21–23°C, and late-day temperatures hovering around 22–23°C confirm the floor has been established. Resolution hinges on final verified data from the Shanghai Meteorological Bureau; minor revisions from additional stations or quality-control adjustments remain the primary uncertainty, though current evidence strongly supports the 22°C bin.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Shanghai on September 10?
22°C 100.0%
18°C or below <1%
19°C <1%
20°C <1%
$16,042 Vol.
$16,042 Vol.
18°C or below
No
19°C
No
20°C
No
21°C
No
22°C
Yes
23°C
No
24°C
No
25°C
No
26°C
No
27°C
No
28°C or higher
No
22°C 100.0%
18°C or below <1%
19°C <1%
20°C <1%
$16,042 Vol.
$16,042 Vol.
18°C or below
No
19°C
No
20°C
No
21°C
No
22°C
Yes
23°C
No
24°C
No
25°C
No
26°C
No
27°C
No
28°C or higher
No
The resolution source for this market will be information from NOAA, specifically the lowest 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.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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: Sep 8, 2026, 12:29 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=zspdResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
The resolution source for this market will be information from NOAA, specifically the lowest 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.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
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...Outcome proposed: No
No dispute
Final outcome: No
**Trader consensus at 100% on 22°C reflects official Shanghai meteorological observations recording a daily minimum near that threshold.** Subtropical monsoon conditions with northwest winds and partly cloudy skies produced typical overnight radiative cooling, aligning station readings from sites like Xujiahui (lowest near 21.4°C) with the market outcome. Multiple forecasts converged on lows of 21–23°C, and late-day temperatures hovering around 22–23°C confirm the floor has been established. Resolution hinges on final verified data from the Shanghai Meteorological Bureau; minor revisions from additional stations or quality-control adjustments remain the primary uncertainty, though current evidence strongly supports the 22°C bin.
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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