National Weather Service observations from the automated surface observing system at Hartsfield-Jackson Atlanta International Airport (KATL)—Atlanta's official climate station—confirm the highest temperature on April 17, 2026, reached 88-89°F, anchoring trader consensus at a 100% implied probability for that outcome amid negligible volume on alternatives. This peak stemmed from an early-season heat wave driven by a persistent upper-level ridge fostering subsidence, abundant sunshine, light winds, and dry air mass, pushing readings far above the mid-April climatological average of 74°F and flirting with records dating to 1896. With data now finalized in NWS archives, realistic challenges are limited to improbable quality-control revisions; traders await the routine CLI summary for affirmation.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Atlanta on April 17?
88-89°F 100.0%
79°F or below <1%
80-81°F <1%
82-83°F <1%
$125,649 Vol.
$125,649 Vol.
79°F or below
No
80-81°F
No
82-83°F
No
84-85°F
No
86-87°F
No
88-89°F
Yes
90-91°F
No
92-93°F
No
94-95°F
No
96-97°F
No
98°F or higher
No
88-89°F 100.0%
79°F or below <1%
80-81°F <1%
82-83°F <1%
$125,649 Vol.
$125,649 Vol.
79°F or below
No
80-81°F
No
82-83°F
No
84-85°F
No
86-87°F
No
88-89°F
Yes
90-91°F
No
92-93°F
No
94-95°F
No
96-97°F
No
98°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 Hartsfield-Jackson International Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/ga/atlanta/KATL.
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 15, 2026, 12:05 AM ET
Resolution Source
https://www.wunderground.com/history/daily/us/ga/atlanta/KATLResolver
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 Hartsfield-Jackson International Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/ga/atlanta/KATL.
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/ga/atlanta/KATLResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
National Weather Service observations from the automated surface observing system at Hartsfield-Jackson Atlanta International Airport (KATL)—Atlanta's official climate station—confirm the highest temperature on April 17, 2026, reached 88-89°F, anchoring trader consensus at a 100% implied probability for that outcome amid negligible volume on alternatives. This peak stemmed from an early-season heat wave driven by a persistent upper-level ridge fostering subsidence, abundant sunshine, light winds, and dry air mass, pushing readings far above the mid-April climatological average of 74°F and flirting with records dating to 1896. With data now finalized in NWS archives, realistic challenges are limited to improbable quality-control revisions; traders await the routine CLI summary for affirmation.
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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