Official forecasts from Spain’s meteorological agency indicate a daytime maximum of 33°C in Madrid on September 21 under clear to partly cloudy skies, light southerly winds, and dry conditions that favor strong solar heating. Model consensus and surface observations support this peak, consistent with late-summer patterns where high pressure and minimal moisture allow temperatures to reach or slightly exceed seasonal norms. The market’s near-certain pricing on 33°C reflects this alignment of guidance and real-time data. Only an unforecasted shift in cloud cover, stronger winds, or station-specific microclimate effects would realistically alter the recorded high.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Madrid on September 21?
Highest temperature in Madrid on September 21?
33°C 100.0%
26°C or below <1%
27°C <1%
28°C <1%
$66,952 Vol.
$66,952 Vol.
Sep 21, 2026
26°C or below
No
27°C
No
28°C
No
29°C
No
30°C
No
31°C
No
32°C
No
33°C
Yes
34°C
No
35°C
No
36°C or higher
No
33°C 100.0%
26°C or below <1%
27°C <1%
28°C <1%
$66,952 Vol.
$66,952 Vol.
Sep 21, 2026
26°C or below
$1,230 Vol.
No
27°C
$1,197 Vol.
No
28°C
$2,080 Vol.
No
29°C
$1,319 Vol.
No
30°C
$4,859 Vol.
No
31°C
$10,473 Vol.
No
32°C
$20,758 Vol.
No
33°C
$14,440 Vol.
Yes
34°C
$9,139 Vol.
No
35°C
$1,287 Vol.
No
36°C or higher
$170 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Adolfo Suárez Madrid-Barajas Airport Station in degrees Celsius on 21 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=lemd
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 forecasts from Spain’s meteorological agency indicate a daytime maximum of 33°C in Madrid on September 21 under clear to partly cloudy skies, light southerly winds, and dry conditions that favor strong solar heating. Model consensus and surface observations support this peak, consistent with late-summer patterns where high pressure and minimal moisture allow temperatures to reach or slightly exceed seasonal norms. The market’s near-certain pricing on 33°C reflects this alignment of guidance and real-time data. Only an unforecasted shift in cloud cover, stronger winds, or station-specific microclimate effects would realistically alter the recorded high.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Adolfo Suárez Madrid-Barajas Airport Station in degrees Celsius on 21 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=lemd
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=lemd
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, 12:57 AM ET
Volume
$66,952End Date
Sep 21, 2026Market Opened
Sep 19, 2026, 12:57 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=lemdResolver
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 Adolfo Suárez Madrid-Barajas Airport Station in degrees Celsius on 21 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=lemd
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 forecasts from Spain’s meteorological agency indicate a daytime maximum of 33°C in Madrid on September 21 under clear to partly cloudy skies, light southerly winds, and dry conditions that favor strong solar heating. Model consensus and surface observations support this peak, consistent with late-summer patterns where high pressure and minimal moisture allow temperatures to reach or slightly exceed seasonal norms. The market’s near-certain pricing on 33°C reflects this alignment of guidance and real-time data. Only an unforecasted shift in cloud cover, stronger winds, or station-specific microclimate effects would realistically alter the recorded high.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Adolfo Suárez Madrid-Barajas Airport Station in degrees Celsius on 21 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=lemd
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=lemd
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
$66,952End Date
Sep 21, 2026Market Opened
Sep 19, 2026, 12:57 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=lemdResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official forecasts from Spain’s meteorological agency indicate a daytime maximum of 33°C in Madrid on September 21 under clear to partly cloudy skies, light southerly winds, and dry conditions that favor strong solar heating. Model consensus and surface observations support this peak, consistent with late-summer patterns where high pressure and minimal moisture allow temperatures to reach or slightly exceed seasonal norms. The market’s near-certain pricing on 33°C reflects this alignment of guidance and real-time data. Only an unforecasted shift in cloud cover, stronger winds, or station-specific microclimate effects would realistically alter the recorded high.
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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