Official meteorological observations for Istanbul on September 20 confirm a daily maximum of 24°C, aligning with the market's near-certain consensus. Late-summer atmospheric conditions, including northeast winds and partial cloud cover, limited daytime heating despite earlier model guidance around 25–27°C. This outcome fits within typical September variability for the region, where highs often range 22–26°C based on historical baselines from stations like Istanbul Atatürk Airport. Minor forecast revisions or station-specific differences could still emerge before final certification, though strong model convergence and real-time data make such shifts improbable.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Istanbul on September 20?
Highest temperature in Istanbul on September 20?
24°C 100%
20°C or below <1%
21°C <1%
22°C <1%
$34,558 Vol.
$34,558 Vol.
Sep 20, 2026
20°C or below
No
21°C
No
22°C
No
23°C
No
24°C
Yes
25°C
No
26°C
No
27°C
No
28°C
No
29°C
No
30°C or higher
No
24°C 100%
20°C or below <1%
21°C <1%
22°C <1%
$34,558 Vol.
$34,558 Vol.
Sep 20, 2026
20°C or below
$96 Vol.
No
21°C
$12,742 Vol.
No
22°C
$5,572 Vol.
No
23°C
$3,677 Vol.
No
24°C
$4,504 Vol.
Yes
25°C
$2,653 Vol.
No
26°C
$871 Vol.
No
27°C
$1,582 Vol.
No
28°C
$151 Vol.
No
29°C
$207 Vol.
No
30°C or higher
$2,503 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Istanbul Airport in degrees Celsius on 20 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=LTFM
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.Official meteorological observations for Istanbul on September 20 confirm a daily maximum of 24°C, aligning with the market's near-certain consensus. Late-summer atmospheric conditions, including northeast winds and partial cloud cover, limited daytime heating despite earlier model guidance around 25–27°C. This outcome fits within typical September variability for the region, where highs often range 22–26°C based on historical baselines from stations like Istanbul Atatürk Airport. Minor forecast revisions or station-specific differences could still emerge before final certification, though strong model convergence and real-time data make such shifts improbable.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Istanbul Airport in degrees Celsius on 20 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=LTFM
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=LTFM
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 18, 2026, 12:58 AM ET
Volume
$34,558End Date
Sep 20, 2026Market Opened
Sep 18, 2026, 12:58 AM ETResolver
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 Istanbul Airport in degrees Celsius on 20 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=LTFM
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.Official meteorological observations for Istanbul on September 20 confirm a daily maximum of 24°C, aligning with the market's near-certain consensus. Late-summer atmospheric conditions, including northeast winds and partial cloud cover, limited daytime heating despite earlier model guidance around 25–27°C. This outcome fits within typical September variability for the region, where highs often range 22–26°C based on historical baselines from stations like Istanbul Atatürk Airport. Minor forecast revisions or station-specific differences could still emerge before final certification, though strong model convergence and real-time data make such shifts improbable.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Istanbul Airport in degrees Celsius on 20 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=LTFM
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=LTFM
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
$34,558End Date
Sep 20, 2026Market Opened
Sep 18, 2026, 12:58 AM ETResolver
0x69c47de9d...Outcome proposed: No
No dispute
Final outcome: No
Official meteorological observations for Istanbul on September 20 confirm a daily maximum of 24°C, aligning with the market's near-certain consensus. Late-summer atmospheric conditions, including northeast winds and partial cloud cover, limited daytime heating despite earlier model guidance around 25–27°C. This outcome fits within typical September variability for the region, where highs often range 22–26°C based on historical baselines from stations like Istanbul Atatürk Airport. Minor forecast revisions or station-specific differences could still emerge before final certification, though strong model convergence and real-time data make such shifts improbable.
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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