Recent forecasts from regional models and China Meteorological Administration guidance point to a high near 26°C in Qingdao on September 17 under mostly cloudy skies with southeast winds of 3–4 levels, driving the tight market split between 27°C and 28°C. Coastal sea breezes and persistent cloud cover limit afternoon insolation and peak heating, while subtle differences in model runs on wind strength and timing of any breaks in overcast conditions create the narrow edge between those outcomes. Historical September maxima average 25–27°C, and traders weigh the risk of minor upward revisions if clearer intervals develop before the daily peak. Updated model guidance and official briefings expected overnight will likely refine these probabilities ahead of resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Qingdao on September 17?
28°C 45%
27°C 39%
29°C 10%
26°C 5%
22°C or below
<1%
23°C
<1%
24°C
1%
25°C
2%
26°C
5%
27°C
39%
28°C
45%
29°C
10%
30°C
4%
31°C
2%
32°C or higher
<1%
28°C 45%
27°C 39%
29°C 10%
26°C 5%
22°C or below
<1%
23°C
<1%
24°C
1%
25°C
2%
26°C
5%
27°C
39%
28°C
45%
29°C
10%
30°C
4%
31°C
2%
32°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=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 15, 2026, 12:59 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 highest 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 regional models and China Meteorological Administration guidance point to a high near 26°C in Qingdao on September 17 under mostly cloudy skies with southeast winds of 3–4 levels, driving the tight market split between 27°C and 28°C. Coastal sea breezes and persistent cloud cover limit afternoon insolation and peak heating, while subtle differences in model runs on wind strength and timing of any breaks in overcast conditions create the narrow edge between those outcomes. Historical September maxima average 25–27°C, and traders weigh the risk of minor upward revisions if clearer intervals develop before the daily peak. Updated model guidance and official briefings expected overnight will likely refine these probabilities ahead of resolution.
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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