Forecast models from sources including the China Meteorological Administration and global ensembles indicate a high near 28–29°C for Beijing on September 18, driven by increasing cloud cover, light rain or showers, and southeasterly flow that limits daytime heating during the seasonal transition. These conditions align with the market’s leading outcomes at 29°C (37.5%) and 28°C (25%), as traders weigh the probability of modest cooling against historical September maxima near 27–30°C. Recent observations on September 17 showing highs around 30°C under partly cloudy skies support expectations of a slight decline tomorrow, with resolution hinging on official station readings amid typical model spread in boundary-layer moisture and wind.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Beijing on September 18?
Highest temperature in Beijing on September 18?
29°C 37%
28°C 26%
30°C 18%
27°C 11%
NEW
$10,703 Vol.
NEW
$10,703 Vol.
Sep 18, 2026
23°C or below
<1%
24°C
<1%
25°C
1%
26°C
3%
27°C
11%
28°C
26%
29°C
37%
30°C
18%
31°C
6%
32°C
2%
33°C or higher
1%
29°C 37%
28°C 26%
30°C 18%
27°C 11%
NEW
$10,703 Vol.
NEW
$10,703 Vol.
Sep 18, 2026
23°C or below
$1,279 Vol.
<1%
24°C
$1,643 Vol.
<1%
25°C
$803 Vol.
1%
26°C
$395 Vol.
3%
27°C
$1,399 Vol.
11%
28°C
$1,266 Vol.
26%
29°C
$1,400 Vol.
37%
30°C
$1,015 Vol.
18%
31°C
$446 Vol.
6%
32°C
$434 Vol.
2%
33°C or higher
$703 Vol.
1%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Beijing Capital International Airport Station in degrees Celsius on 18 Sep '26.
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=zbaa
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.Forecast models from sources including the China Meteorological Administration and global ensembles indicate a high near 28–29°C for Beijing on September 18, driven by increasing cloud cover, light rain or showers, and southeasterly flow that limits daytime heating during the seasonal transition. These conditions align with the market’s leading outcomes at 29°C (37.5%) and 28°C (25%), as traders weigh the probability of modest cooling against historical September maxima near 27–30°C. Recent observations on September 17 showing highs around 30°C under partly cloudy skies support expectations of a slight decline tomorrow, with resolution hinging on official station readings amid typical model spread in boundary-layer moisture and wind.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Beijing Capital International Airport Station in degrees Celsius on 18 Sep '26.
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=zbaa
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.
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=zbaa
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 16, 2026, 12:57 AM ET
Volume
$10,703End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 12:57 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=zbaaResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Beijing Capital International Airport Station in degrees Celsius on 18 Sep '26.
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=zbaa
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.Forecast models from sources including the China Meteorological Administration and global ensembles indicate a high near 28–29°C for Beijing on September 18, driven by increasing cloud cover, light rain or showers, and southeasterly flow that limits daytime heating during the seasonal transition. These conditions align with the market’s leading outcomes at 29°C (37.5%) and 28°C (25%), as traders weigh the probability of modest cooling against historical September maxima near 27–30°C. Recent observations on September 17 showing highs around 30°C under partly cloudy skies support expectations of a slight decline tomorrow, with resolution hinging on official station readings amid typical model spread in boundary-layer moisture and wind.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Beijing Capital International Airport Station in degrees Celsius on 18 Sep '26.
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=zbaa
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.
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=zbaa
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.
Volume
$10,703End Date
Sep 18, 2026Market Opened
Sep 16, 2026, 12:57 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=zbaaResolver
0x69c47De9D...Forecast models from sources including the China Meteorological Administration and global ensembles indicate a high near 28–29°C for Beijing on September 18, driven by increasing cloud cover, light rain or showers, and southeasterly flow that limits daytime heating during the seasonal transition. These conditions align with the market’s leading outcomes at 29°C (37.5%) and 28°C (25%), as traders weigh the probability of modest cooling against historical September maxima near 27–30°C. Recent observations on September 17 showing highs around 30°C under partly cloudy skies support expectations of a slight decline tomorrow, with resolution hinging on official station readings amid typical model spread in boundary-layer moisture and wind.
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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