Recent surface observations from Mexico City stations, including the official Licenciado Benito Juárez International Airport site, show afternoon temperatures climbing to 26°C under partly cloudy skies with light easterly winds and dew points near 5°C, aligning closely with ensemble model guidance from GFS and ECMWF runs. This outcome reflects typical late-September highland conditions, where solar heating is moderated by seasonal moisture and afternoon convection, keeping maxima near or slightly above the 23–25°C climatological average. Trader consensus at 96% for 26°C incorporates these verified readings and the low likelihood of rapid intensification without significant clearing. A brief window of reduced cloud cover or a localized station variance could push a single measurement to 27°C, though sustained warming above that threshold remains improbable given current atmospheric stability.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Mexico City on September 22?
Highest temperature in Mexico City on September 22?
26°C 99%
27°C or higher 2%
17°C or below <1%
18°C <1%
$19,820 Vol.
$19,820 Vol.
Sep 22, 2026
17°C or below
<1%
18°C
<1%
19°C
<1%
20°C
<1%
21°C
<1%
22°C
<1%
23°C
<1%
24°C
<1%
25°C
<1%
26°C
99%
27°C or higher
2%
26°C 99%
27°C or higher 2%
17°C or below <1%
18°C <1%
$19,820 Vol.
$19,820 Vol.
Sep 22, 2026
17°C or below
$418 Vol.
<1%
18°C
$41 Vol.
<1%
19°C
$41 Vol.
<1%
20°C
$41 Vol.
<1%
21°C
$33 Vol.
<1%
22°C
$27 Vol.
<1%
23°C
$244 Vol.
<1%
24°C
$1,803 Vol.
<1%
25°C
$6,565 Vol.
<1%
26°C
$5,060 Vol.
99%
27°C or higher
$5,662 Vol.
2%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Benito Juárez International Airport Station in degrees Celsius on 22 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=mmmx
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 surface observations from Mexico City stations, including the official Licenciado Benito Juárez International Airport site, show afternoon temperatures climbing to 26°C under partly cloudy skies with light easterly winds and dew points near 5°C, aligning closely with ensemble model guidance from GFS and ECMWF runs. This outcome reflects typical late-September highland conditions, where solar heating is moderated by seasonal moisture and afternoon convection, keeping maxima near or slightly above the 23–25°C climatological average. Trader consensus at 96% for 26°C incorporates these verified readings and the low likelihood of rapid intensification without significant clearing. A brief window of reduced cloud cover or a localized station variance could push a single measurement to 27°C, though sustained warming above that threshold remains improbable given current atmospheric stability.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Benito Juárez International Airport Station in degrees Celsius on 22 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=mmmx
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=mmmx
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 20, 2026, 8:56 AM ET
Volume
$19,820End Date
Sep 22, 2026Market Opened
Sep 20, 2026, 8:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=mmmxResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Benito Juárez International Airport Station in degrees Celsius on 22 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=mmmx
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 surface observations from Mexico City stations, including the official Licenciado Benito Juárez International Airport site, show afternoon temperatures climbing to 26°C under partly cloudy skies with light easterly winds and dew points near 5°C, aligning closely with ensemble model guidance from GFS and ECMWF runs. This outcome reflects typical late-September highland conditions, where solar heating is moderated by seasonal moisture and afternoon convection, keeping maxima near or slightly above the 23–25°C climatological average. Trader consensus at 96% for 26°C incorporates these verified readings and the low likelihood of rapid intensification without significant clearing. A brief window of reduced cloud cover or a localized station variance could push a single measurement to 27°C, though sustained warming above that threshold remains improbable given current atmospheric stability.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Benito Juárez International Airport Station in degrees Celsius on 22 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=mmmx
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=mmmx
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
$19,820End Date
Sep 22, 2026Market Opened
Sep 20, 2026, 8:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=mmmxResolver
0x69c47De9D...Recent surface observations from Mexico City stations, including the official Licenciado Benito Juárez International Airport site, show afternoon temperatures climbing to 26°C under partly cloudy skies with light easterly winds and dew points near 5°C, aligning closely with ensemble model guidance from GFS and ECMWF runs. This outcome reflects typical late-September highland conditions, where solar heating is moderated by seasonal moisture and afternoon convection, keeping maxima near or slightly above the 23–25°C climatological average. Trader consensus at 96% for 26°C incorporates these verified readings and the low likelihood of rapid intensification without significant clearing. A brief window of reduced cloud cover or a localized station variance could push a single measurement to 27°C, though sustained warming above that threshold remains improbable given current atmospheric stability.
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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