Recent meteorological observations from Amsterdam-area stations, including Schiphol, confirm a daily maximum of 21°C on September 11, 2026, aligning precisely with the market's near-certain outcome. This reading reflects typical early-September conditions moderated by Atlantic influences and light winds, falling slightly above the 1991–2020 average high of 19.6°C but well below historical extremes near 29°C. Official data releases from monitoring agencies provide the resolution threshold, with minimal forecast uncertainty remaining as the observation window closes. Revisions to the recorded maximum or disputes over station siting represent the primary, albeit low-probability, scenarios that could shift the implied probability.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Amsterdam on September 11?
Highest temperature in Amsterdam on September 11?
21°C 100.0%
14°C or below <1%
15°C <1%
16°C <1%
$35,860 Vol.
$35,860 Vol.
Sep 11, 2026
14°C or below
No
15°C
No
16°C
No
17°C
No
18°C
No
19°C
No
20°C
No
21°C
Yes
22°C
No
23°C
No
24°C or higher
No
21°C 100.0%
14°C or below <1%
15°C <1%
16°C <1%
$35,860 Vol.
$35,860 Vol.
Sep 11, 2026
14°C or below
$154 Vol.
No
15°C
$146 Vol.
No
16°C
$166 Vol.
No
17°C
$2,555 Vol.
No
18°C
$2,522 Vol.
No
19°C
$7,021 Vol.
No
20°C
$9,019 Vol.
No
21°C
$9,805 Vol.
Yes
22°C
$2,796 Vol.
No
23°C
$1,062 Vol.
No
24°C or higher
$613 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Amsterdam Airport Schiphol Station in degrees Celsius on 11 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=eham
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.Recent meteorological observations from Amsterdam-area stations, including Schiphol, confirm a daily maximum of 21°C on September 11, 2026, aligning precisely with the market's near-certain outcome. This reading reflects typical early-September conditions moderated by Atlantic influences and light winds, falling slightly above the 1991–2020 average high of 19.6°C but well below historical extremes near 29°C. Official data releases from monitoring agencies provide the resolution threshold, with minimal forecast uncertainty remaining as the observation window closes. Revisions to the recorded maximum or disputes over station siting represent the primary, albeit low-probability, scenarios that could shift the implied probability.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Amsterdam Airport Schiphol Station in degrees Celsius on 11 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=eham
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=eham
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 9, 2026, 12:58 AM ET
Volume
$35,860End Date
Sep 11, 2026Market Opened
Sep 9, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=ehamResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Amsterdam Airport Schiphol Station in degrees Celsius on 11 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=eham
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.Recent meteorological observations from Amsterdam-area stations, including Schiphol, confirm a daily maximum of 21°C on September 11, 2026, aligning precisely with the market's near-certain outcome. This reading reflects typical early-September conditions moderated by Atlantic influences and light winds, falling slightly above the 1991–2020 average high of 19.6°C but well below historical extremes near 29°C. Official data releases from monitoring agencies provide the resolution threshold, with minimal forecast uncertainty remaining as the observation window closes. Revisions to the recorded maximum or disputes over station siting represent the primary, albeit low-probability, scenarios that could shift the implied probability.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Amsterdam Airport Schiphol Station in degrees Celsius on 11 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=eham
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=eham
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
$35,860End Date
Sep 11, 2026Market Opened
Sep 9, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=ehamResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Recent meteorological observations from Amsterdam-area stations, including Schiphol, confirm a daily maximum of 21°C on September 11, 2026, aligning precisely with the market's near-certain outcome. This reading reflects typical early-September conditions moderated by Atlantic influences and light winds, falling slightly above the 1991–2020 average high of 19.6°C but well below historical extremes near 29°C. Official data releases from monitoring agencies provide the resolution threshold, with minimal forecast uncertainty remaining as the observation window closes. Revisions to the recorded maximum or disputes over station siting represent the primary, albeit low-probability, scenarios that could shift the implied probability.
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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