Recent forecast models from Mexican meteorological agencies and international sources indicate maximum temperatures of 26–28°C for Mexico City on September 21, driven by warm, mostly cloudy conditions with light northerly winds and a 20–40% chance of showers that may limit peak heating. Current observations show afternoon readings near 22–24°C under similar patterns, positioning 27°C or higher as the market leader at 52.5% implied probability while 26°C holds strong secondary support. Historical September maxima average 22–24°C at the city’s high elevation, but recent model consensus favors slightly above-normal warmth without strong cooling influences. Updated forecasts and any shifts in cloud cover or precipitation will be key near-term variables.
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 21?
Highest temperature in Mexico City on September 21?
27°C or higher 53%
26°C 37%
25°C 8%
24°C 6%
NEW
NEW
Sep 21, 2026
17°C or below
<1%
18°C
<1%
19°C
<1%
20°C
<1%
21°C
<1%
22°C
1%
23°C
3%
24°C
6%
25°C
8%
26°C
37%
27°C or higher
53%
27°C or higher 53%
26°C 37%
25°C 8%
24°C 6%
NEW
NEW
Sep 21, 2026
17°C or below
$31 Vol.
<1%
18°C
$16 Vol.
<1%
19°C
$31 Vol.
<1%
20°C
$31 Vol.
<1%
21°C
$41 Vol.
<1%
22°C
$36 Vol.
1%
23°C
$48 Vol.
3%
24°C
$51 Vol.
6%
25°C
$41 Vol.
8%
26°C
$182 Vol.
37%
27°C or higher
$361 Vol.
53%
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 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=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 forecast models from Mexican meteorological agencies and international sources indicate maximum temperatures of 26–28°C for Mexico City on September 21, driven by warm, mostly cloudy conditions with light northerly winds and a 20–40% chance of showers that may limit peak heating. Current observations show afternoon readings near 22–24°C under similar patterns, positioning 27°C or higher as the market leader at 52.5% implied probability while 26°C holds strong secondary support. Historical September maxima average 22–24°C at the city’s high elevation, but recent model consensus favors slightly above-normal warmth without strong cooling influences. Updated forecasts and any shifts in cloud cover or precipitation will be key near-term variables.
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 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=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 19, 2026, 8:56 AM ET
Volume
$869End Date
Sep 21, 2026Market Opened
Sep 19, 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 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=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 forecast models from Mexican meteorological agencies and international sources indicate maximum temperatures of 26–28°C for Mexico City on September 21, driven by warm, mostly cloudy conditions with light northerly winds and a 20–40% chance of showers that may limit peak heating. Current observations show afternoon readings near 22–24°C under similar patterns, positioning 27°C or higher as the market leader at 52.5% implied probability while 26°C holds strong secondary support. Historical September maxima average 22–24°C at the city’s high elevation, but recent model consensus favors slightly above-normal warmth without strong cooling influences. Updated forecasts and any shifts in cloud cover or precipitation will be key near-term variables.
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 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=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
$869End Date
Sep 21, 2026Market Opened
Sep 19, 2026, 8:56 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=mmmxResolver
0x69c47De9D...Recent forecast models from Mexican meteorological agencies and international sources indicate maximum temperatures of 26–28°C for Mexico City on September 21, driven by warm, mostly cloudy conditions with light northerly winds and a 20–40% chance of showers that may limit peak heating. Current observations show afternoon readings near 22–24°C under similar patterns, positioning 27°C or higher as the market leader at 52.5% implied probability while 26°C holds strong secondary support. Historical September maxima average 22–24°C at the city’s high elevation, but recent model consensus favors slightly above-normal warmth without strong cooling influences. Updated forecasts and any shifts in cloud cover or precipitation will be key near-term variables.
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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