Official National Weather Service observations at Miami International Airport (KMIA), the market's resolution source, recorded a peak temperature of 85°F at 2:53 p.m. EDT on April 18, 2026, placing the highest firmly in the 84-85°F range and driving trader consensus to 100% implied probability. Hourly Automated Surface Observing System data showed temperatures climbing from 82°F around noon to this maximum amid partly cloudy skies, sea breeze influences, and light winds typical for mid-April, aligning closely with the 84°F climatological normal. While data revisions are exceedingly rare post-quality control by NOAA, a challenge could arise only from an official correction uncovering a sensor anomaly or alternative station reading, though none is indicated in current reports.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Miami on April 18?
Highest temperature in Miami on April 18?
84-85°F 100.0%
73°F or below <1%
74-75°F <1%
76-77°F <1%
$78,743 Vol.
$78,743 Vol.
73°F or below
No
74-75°F
No
76-77°F
No
78-79°F
No
80-81°F
No
82-83°F
No
84-85°F
Yes
86-87°F
No
88-89°F
No
90-91°F
No
92°F or higher
No
84-85°F 100.0%
73°F or below <1%
74-75°F <1%
76-77°F <1%
$78,743 Vol.
$78,743 Vol.
73°F or below
No
74-75°F
No
76-77°F
No
78-79°F
No
80-81°F
No
82-83°F
No
84-85°F
Yes
86-87°F
No
88-89°F
No
90-91°F
No
92°F or higher
No
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 Miami Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/fl/miami/KMIA.
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 Fahrenheit (eg, 21°F). 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: Apr 16, 2026, 12:26 AM ET
Resolution Source
https://www.wunderground.com/history/daily/us/fl/miami/KMIAResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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 Miami Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/fl/miami/KMIA.
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 Fahrenheit (eg, 21°F). 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.
Resolution Source
https://www.wunderground.com/history/daily/us/fl/miami/KMIAResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official National Weather Service observations at Miami International Airport (KMIA), the market's resolution source, recorded a peak temperature of 85°F at 2:53 p.m. EDT on April 18, 2026, placing the highest firmly in the 84-85°F range and driving trader consensus to 100% implied probability. Hourly Automated Surface Observing System data showed temperatures climbing from 82°F around noon to this maximum amid partly cloudy skies, sea breeze influences, and light winds typical for mid-April, aligning closely with the 84°F climatological normal. While data revisions are exceedingly rare post-quality control by NOAA, a challenge could arise only from an official correction uncovering a sensor anomaly or alternative station reading, though none is indicated in current reports.
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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