Trader consensus on Polymarket assigns 100% implied probability to a high temperature of 72-73°F in Chicago on April 15, 2026, directly reflecting the official measurement of 73°F at Chicago O'Hare International Airport (KORD), the National Weather Service-designated climate station. This peak, recorded at 2:58 p.m. CDT amid record-breaking 2.43 inches of rainfall from thunderstorms, surpassed the previous April 15 record of 72°F set in 1955, well above the climatological normal of 59°F. Supporting evidence includes verified METAR observations and NWS post-event summaries confirming no higher readings. Realistic challenges—such as rare data revisions from instrument audits or quality control discrepancies—remain improbable given the robust monitoring protocols.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Chicago on April 15?
Highest temperature in Chicago on April 15?
72-73°F 100.0%
55°F or below <1%
56-57°F <1%
58-59°F <1%
$226,686 Vol.
$226,686 Vol.
55°F or below
No
56-57°F
No
58-59°F
No
60-61°F
No
62-63°F
No
64-65°F
No
66-67°F
No
68-69°F
No
70-71°F
No
72-73°F
Yes
74°F or higher
No
72-73°F 100.0%
55°F or below <1%
56-57°F <1%
58-59°F <1%
$226,686 Vol.
$226,686 Vol.
55°F or below
No
56-57°F
No
58-59°F
No
60-61°F
No
62-63°F
No
64-65°F
No
66-67°F
No
68-69°F
No
70-71°F
No
72-73°F
Yes
74°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 Chicago O'Hare Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/il/chicago/KORD.
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 13, 2026, 12:26 AM ET
Resolution Source
https://www.wunderground.com/history/daily/us/il/chicago/KORDResolver
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 Chicago O'Hare Intl Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/us/il/chicago/KORD.
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/il/chicago/KORDResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Trader consensus on Polymarket assigns 100% implied probability to a high temperature of 72-73°F in Chicago on April 15, 2026, directly reflecting the official measurement of 73°F at Chicago O'Hare International Airport (KORD), the National Weather Service-designated climate station. This peak, recorded at 2:58 p.m. CDT amid record-breaking 2.43 inches of rainfall from thunderstorms, surpassed the previous April 15 record of 72°F set in 1955, well above the climatological normal of 59°F. Supporting evidence includes verified METAR observations and NWS post-event summaries confirming no higher readings. Realistic challenges—such as rare data revisions from instrument audits or quality control discrepancies—remain improbable given the robust monitoring protocols.
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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