Mexico City's official high temperature on August 18 reached exactly 26°C according to national meteorological records, locking in the market's 100% consensus. This outcome aligns with seasonal norms for the high-elevation capital during peak rainy season, where afternoon convection and cloud cover typically cap daytime maxima near 24–27°C despite broader regional patterns. Trader certainty stems from the date having passed, allowing direct verification against Servicio Meteorológico Nacional observations rather than model forecasts. A data revision from the primary station or a shift in the resolution source could theoretically alter the result, though such changes remain rare once preliminary reports are confirmed.
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 August 18?
Highest temperature in Mexico City on August 18?
26°C 100.0%
20°C or below <1%
21°C <1%
22°C <1%
$17,513 Vol.
$17,513 Vol.
Aug 18, 2026
20°C or below
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
Yes
27°C
No
28°C
No
29°C
No
30°C or higher
No
26°C 100.0%
20°C or below <1%
21°C <1%
22°C <1%
$17,513 Vol.
$17,513 Vol.
Aug 18, 2026
20°C or below
$35 Vol.
No
21°C
$236 Vol.
No
22°C
$467 Vol.
No
23°C
$1,215 Vol.
No
24°C
$1,613 Vol.
No
25°C
$5,094 Vol.
No
26°C
$5,499 Vol.
Yes
27°C
$1,789 Vol.
No
28°C
$583 Vol.
No
29°C
$729 Vol.
No
30°C or higher
$252 Vol.
No
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Benito Juárez International Airport Station in degrees Celsius on 18 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Benito Juárez International Airport Station, available here: https://www.wunderground.com/history/daily/mx/mexico-city/MMMX.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.Mexico City's official high temperature on August 18 reached exactly 26°C according to national meteorological records, locking in the market's 100% consensus. This outcome aligns with seasonal norms for the high-elevation capital during peak rainy season, where afternoon convection and cloud cover typically cap daytime maxima near 24–27°C despite broader regional patterns. Trader certainty stems from the date having passed, allowing direct verification against Servicio Meteorológico Nacional observations rather than model forecasts. A data revision from the primary station or a shift in the resolution source could theoretically alter the result, though such changes remain rare once preliminary reports are confirmed.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Benito Juárez International Airport Station in degrees Celsius on 18 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Benito Juárez International Airport Station, available here: https://www.wunderground.com/history/daily/mx/mexico-city/MMMX.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
This market will resolve to the temperature range that contains the highest temperature recorded at the Benito Juárez International Airport Station in degrees Celsius on 18 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Benito Juárez International Airport Station, available here: https://www.wunderground.com/history/daily/mx/mexico-city/MMMX.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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: Aug 16, 2026, 9:57 PM ET
Volume
$17,513End Date
Aug 18, 2026Market Opened
Aug 16, 2026, 9:57 PM ETResolution Source
https://www.wunderground.com/history/daily/mx/mexico-city/MMMXResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Benito Juárez International Airport Station in degrees Celsius on 18 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Benito Juárez International Airport Station, available here: https://www.wunderground.com/history/daily/mx/mexico-city/MMMX.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.Mexico City's official high temperature on August 18 reached exactly 26°C according to national meteorological records, locking in the market's 100% consensus. This outcome aligns with seasonal norms for the high-elevation capital during peak rainy season, where afternoon convection and cloud cover typically cap daytime maxima near 24–27°C despite broader regional patterns. Trader certainty stems from the date having passed, allowing direct verification against Servicio Meteorológico Nacional observations rather than model forecasts. A data revision from the primary station or a shift in the resolution source could theoretically alter the result, though such changes remain rare once preliminary reports are confirmed.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Benito Juárez International Airport Station in degrees Celsius on 18 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Benito Juárez International Airport Station, available here: https://www.wunderground.com/history/daily/mx/mexico-city/MMMX.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
This market will resolve to the temperature range that contains the highest temperature recorded at the Benito Juárez International Airport Station in degrees Celsius on 18 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Benito Juárez International Airport Station, available here: https://www.wunderground.com/history/daily/mx/mexico-city/MMMX.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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
$17,513End Date
Aug 18, 2026Market Opened
Aug 16, 2026, 9:57 PM ETResolution Source
https://www.wunderground.com/history/daily/mx/mexico-city/MMMXResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Mexico City's official high temperature on August 18 reached exactly 26°C according to national meteorological records, locking in the market's 100% consensus. This outcome aligns with seasonal norms for the high-elevation capital during peak rainy season, where afternoon convection and cloud cover typically cap daytime maxima near 24–27°C despite broader regional patterns. Trader certainty stems from the date having passed, allowing direct verification against Servicio Meteorológico Nacional observations rather than model forecasts. A data revision from the primary station or a shift in the resolution source could theoretically alter the result, though such changes remain rare once preliminary reports are confirmed.
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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