National Weather Service observations at Miami International Airport (KMIA), the official station for this market, confirm the highest temperature on April 21 reached 80°F around midday, driving trader consensus to 100% implied probability for the 80-81°F outcome as data finalizes via Weather Underground records. This peak, 4°F below the April climatological normal of 84°F, stemmed from a recent cold front introducing cooler mid-level air masses, persistent gusty northeast winds of 15-20 mph gusting to 32 mph that suppressed sea breeze development and convective heating, plus extreme drought limiting evaporative cooling amid partly cloudy skies. Model ensembles like GFS and ECMWF accurately forecasted this subdued boundary layer warming. Only a rare post-audit revision by NWS—historically negligible for finalized automated data—could challenge resolution, with markets typically locking post-midnight.
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 21?
Highest temperature in Miami on April 21?
80-81°F 100.0%
69°F or below <1%
70-71°F <1%
72-73°F <1%
$94,216 Vol.
$94,216 Vol.
Apr 21, 2026
69°F or below
No
70-71°F
No
72-73°F
No
74-75°F
No
76-77°F
No
78-79°F
No
80-81°F
Yes
82-83°F
No
84-85°F
No
86-87°F
No
88°F or higher
No
80-81°F 100.0%
69°F or below <1%
70-71°F <1%
72-73°F <1%
$94,216 Vol.
$94,216 Vol.
Apr 21, 2026
69°F or below
$1,644 Vol.
No
70-71°F
$1,211 Vol.
No
72-73°F
$4,011 Vol.
No
74-75°F
$14,795 Vol.
No
76-77°F
$15,803 Vol.
No
78-79°F
$13,754 Vol.
No
80-81°F
$13,242 Vol.
Yes
82-83°F
$11,618 Vol.
No
84-85°F
$7,113 Vol.
No
86-87°F
$6,052 Vol.
No
88°F or higher
$4,972 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded at the Miami Intl Airport Station in degrees Fahrenheit on 21 Apr '26.
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.National Weather Service observations at Miami International Airport (KMIA), the official station for this market, confirm the highest temperature on April 21 reached 80°F around midday, driving trader consensus to 100% implied probability for the 80-81°F outcome as data finalizes via Weather Underground records. This peak, 4°F below the April climatological normal of 84°F, stemmed from a recent cold front introducing cooler mid-level air masses, persistent gusty northeast winds of 15-20 mph gusting to 32 mph that suppressed sea breeze development and convective heating, plus extreme drought limiting evaporative cooling amid partly cloudy skies. Model ensembles like GFS and ECMWF accurately forecasted this subdued boundary layer warming. Only a rare post-audit revision by NWS—historically negligible for finalized automated data—could challenge resolution, with markets typically locking post-midnight.
This market will resolve to the temperature range that contains the highest temperature recorded at the Miami Intl Airport Station in degrees Fahrenheit on 21 Apr '26.
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.
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 19, 2026, 12:48 AM ET
Volume
$94,216End Date
Apr 21, 2026Market Opened
Apr 19, 2026, 12:48 AM ETResolution Source
https://www.wunderground.com/history/daily/us/fl/miami/KMIAResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve to the temperature range that contains the highest temperature recorded at the Miami Intl Airport Station in degrees Fahrenheit on 21 Apr '26.
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.National Weather Service observations at Miami International Airport (KMIA), the official station for this market, confirm the highest temperature on April 21 reached 80°F around midday, driving trader consensus to 100% implied probability for the 80-81°F outcome as data finalizes via Weather Underground records. This peak, 4°F below the April climatological normal of 84°F, stemmed from a recent cold front introducing cooler mid-level air masses, persistent gusty northeast winds of 15-20 mph gusting to 32 mph that suppressed sea breeze development and convective heating, plus extreme drought limiting evaporative cooling amid partly cloudy skies. Model ensembles like GFS and ECMWF accurately forecasted this subdued boundary layer warming. Only a rare post-audit revision by NWS—historically negligible for finalized automated data—could challenge resolution, with markets typically locking post-midnight.
This market will resolve to the temperature range that contains the highest temperature recorded at the Miami Intl Airport Station in degrees Fahrenheit on 21 Apr '26.
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.
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.
Volume
$94,216End Date
Apr 21, 2026Market Opened
Apr 19, 2026, 12:48 AM ETResolution Source
https://www.wunderground.com/history/daily/us/fl/miami/KMIAResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
National Weather Service observations at Miami International Airport (KMIA), the official station for this market, confirm the highest temperature on April 21 reached 80°F around midday, driving trader consensus to 100% implied probability for the 80-81°F outcome as data finalizes via Weather Underground records. This peak, 4°F below the April climatological normal of 84°F, stemmed from a recent cold front introducing cooler mid-level air masses, persistent gusty northeast winds of 15-20 mph gusting to 32 mph that suppressed sea breeze development and convective heating, plus extreme drought limiting evaporative cooling amid partly cloudy skies. Model ensembles like GFS and ECMWF accurately forecasted this subdued boundary layer warming. Only a rare post-audit revision by NWS—historically negligible for finalized automated data—could challenge resolution, with markets typically locking post-midnight.
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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