Recent forecasts from multiple meteorological sources project a low near 20°C for Qingdao on September 21, driven by a wind shift from southerly to northerly flow around September 20 that may advect slightly cooler continental air, followed by partial clearing. Nighttime radiative cooling under variable cloud cover and moderate humidity levels around 60-90% will largely determine the exact minimum, with northerly breezes potentially enhancing cooling while persistent marine influence or increased cloudiness could limit the drop. This uncertainty explains the near-even market split between 25°C-or-higher and 15°C-or-below outcomes, as small changes in steering patterns or dew-point depression could push readings outside the central 17-21°C cluster favored by current model consensus. Updated runs from agencies monitoring regional pressure gradients will refine these variables ahead of the date.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedLowest temperature in Qingdao on September 21?
25°C or higher 84%
15°C or below 80%
16°C 40%
20°C 40%
15°C or below
80%
16°C
40%
17°C
27%
18°C
27%
19°C
21%
20°C
40%
21°C
40%
22°C
16%
23°C
15%
24°C
13%
25°C or higher
84%
25°C or higher 84%
15°C or below 80%
16°C 40%
20°C 40%
15°C or below
80%
16°C
40%
17°C
27%
18°C
27%
19°C
21%
20°C
40%
21°C
40%
22°C
16%
23°C
15%
24°C
13%
25°C or higher
84%
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=zsqd
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 19, 2026, 12:32 AM ET
Resolution Source
https://www.weather.gov/wrh/timeseries?site=zsqdResolver
0x69c47De9D...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=zsqd
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=zsqdResolver
0x69c47De9D...Recent forecasts from multiple meteorological sources project a low near 20°C for Qingdao on September 21, driven by a wind shift from southerly to northerly flow around September 20 that may advect slightly cooler continental air, followed by partial clearing. Nighttime radiative cooling under variable cloud cover and moderate humidity levels around 60-90% will largely determine the exact minimum, with northerly breezes potentially enhancing cooling while persistent marine influence or increased cloudiness could limit the drop. This uncertainty explains the near-even market split between 25°C-or-higher and 15°C-or-below outcomes, as small changes in steering patterns or dew-point depression could push readings outside the central 17-21°C cluster favored by current model consensus. Updated runs from agencies monitoring regional pressure gradients will refine these variables ahead of the date.
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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