Official meteorological observations from Argentina's National Meteorological Service confirmed a daily maximum of 18°C in Buenos Aires on September 4, 2026, under clear to partly cloudy skies following a cold front passage. Stable high pressure, light southwest winds, and low humidity supported gradual daytime warming from morning lows near 8–9°C to the afternoon peak, aligning with seasonal September averages around 19°C. Multiple forecast models converged on this range with minimal spread, producing the market's near-certain 18°C outcome. Only revised station data or localized microclimate differences at official recording sites could realistically alter the result, though such adjustments remain rare after initial verification.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Buenos Aires on September 4?
Highest temperature in Buenos Aires on September 4?
18°C 100.0%
12°C or below <1%
13°C <1%
14°C <1%
$51,748 Vol.
$51,748 Vol.
Sep 4, 2026
12°C or below
No
13°C
No
14°C
No
15°C
No
16°C
No
17°C
No
18°C
Yes
19°C
No
20°C
No
21°C
No
22°C or higher
No
18°C 100.0%
12°C or below <1%
13°C <1%
14°C <1%
$51,748 Vol.
$51,748 Vol.
Sep 4, 2026
12°C or below
$2,911 Vol.
No
13°C
$724 Vol.
No
14°C
$906 Vol.
No
15°C
$747 Vol.
No
16°C
$2,723 Vol.
No
17°C
$16,722 Vol.
No
18°C
$9,246 Vol.
Yes
19°C
$9,612 Vol.
No
20°C
$5,490 Vol.
No
21°C
$1,473 Vol.
No
22°C or higher
$1,192 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Minister Pistarini Intl Airport Station in degrees Celsius on 4 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=saez
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 from Argentina's National Meteorological Service confirmed a daily maximum of 18°C in Buenos Aires on September 4, 2026, under clear to partly cloudy skies following a cold front passage. Stable high pressure, light southwest winds, and low humidity supported gradual daytime warming from morning lows near 8–9°C to the afternoon peak, aligning with seasonal September averages around 19°C. Multiple forecast models converged on this range with minimal spread, producing the market's near-certain 18°C outcome. Only revised station data or localized microclimate differences at official recording sites could realistically alter the result, though such adjustments remain rare after initial verification.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Minister Pistarini Intl Airport Station in degrees Celsius on 4 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=saez
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=saez
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 2, 2026, 8:55 AM ET
Volume
$51,748End Date
Sep 4, 2026Market Opened
Sep 2, 2026, 8:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=saezResolver
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 Minister Pistarini Intl Airport Station in degrees Celsius on 4 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=saez
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 from Argentina's National Meteorological Service confirmed a daily maximum of 18°C in Buenos Aires on September 4, 2026, under clear to partly cloudy skies following a cold front passage. Stable high pressure, light southwest winds, and low humidity supported gradual daytime warming from morning lows near 8–9°C to the afternoon peak, aligning with seasonal September averages around 19°C. Multiple forecast models converged on this range with minimal spread, producing the market's near-certain 18°C outcome. Only revised station data or localized microclimate differences at official recording sites could realistically alter the result, though such adjustments remain rare after initial verification.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Minister Pistarini Intl Airport Station in degrees Celsius on 4 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=saez
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=saez
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
$51,748End Date
Sep 4, 2026Market Opened
Sep 2, 2026, 8:55 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=saezResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official meteorological observations from Argentina's National Meteorological Service confirmed a daily maximum of 18°C in Buenos Aires on September 4, 2026, under clear to partly cloudy skies following a cold front passage. Stable high pressure, light southwest winds, and low humidity supported gradual daytime warming from morning lows near 8–9°C to the afternoon peak, aligning with seasonal September averages around 19°C. Multiple forecast models converged on this range with minimal spread, producing the market's near-certain 18°C outcome. Only revised station data or localized microclimate differences at official recording sites could realistically alter the result, though such adjustments remain rare after initial verification.
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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