Trader consensus has locked in 29°C or higher as virtually certain for Buenos Aires' highest temperature on March 18, driven by official forecasts from Argentina's Servicio Meteorológico Nacional and international models like GFS and ECMWF, which converge on peaks of 32–35°C amid a persistent subtropical high-pressure ridge fueling a regional heatwave. Recent observations confirm this pattern, with preceding days exceeding 30°C under clear skies and low humidity, aligning with historical March extremes during similar blocking highs. Scenarios challenging this include an unforeseen southerly gale introducing cooler maritime air or unmodeled convective showers increasing cloud cover, though ensemble probabilities assign these under 5% likelihood based on current upper-air analyses.
Experimental AI-generated summary referencing Polymarket data · UpdatedHighest temperature in Buenos Aires on March 18?
Highest temperature in Buenos Aires on March 18?
29°C or higher 100.0%
19°C or below <1%
20°C <1%
21°C <1%
$0.00 Vol.
$0.00 Vol.
19°C or below
No
20°C
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C
No
28°C
No
29°C or higher
Yes
29°C or higher 100.0%
19°C or below <1%
20°C <1%
21°C <1%
$0.00 Vol.
$0.00 Vol.
19°C or below
No
20°C
No
21°C
No
22°C
No
23°C
No
24°C
No
25°C
No
26°C
No
27°C
No
28°C
No
29°C or higher
Yes
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Minister Pistarini Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/ar/ezeiza/SAEZ.
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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: Mar 14, 2026, 6:01 AM ET
Resolution Source
https://www.wunderground.com/history/daily/ar/ezeiza/SAEZResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Resolution Source
https://www.wunderground.com/history/daily/ar/ezeiza/SAEZResolver
0x69c47De9D...Trader consensus has locked in 29°C or higher as virtually certain for Buenos Aires' highest temperature on March 18, driven by official forecasts from Argentina's Servicio Meteorológico Nacional and international models like GFS and ECMWF, which converge on peaks of 32–35°C amid a persistent subtropical high-pressure ridge fueling a regional heatwave. Recent observations confirm this pattern, with preceding days exceeding 30°C under clear skies and low humidity, aligning with historical March extremes during similar blocking highs. Scenarios challenging this include an unforeseen southerly gale introducing cooler maritime air or unmodeled convective showers increasing cloud cover, though ensemble probabilities assign these under 5% likelihood based on current upper-air analyses.
Experimental AI-generated summary referencing Polymarket data · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions