National Weather Service observations from Chicago O'Hare International Airport (KORD), the official station for such metrics, confirm the April 25 high temperature peaked at 55°F around midday, solidifying trader consensus at 100% implied probability for 54-55°F. Persistent overcast conditions and northwest winds of 10-15 mph in the wake of a cold frontal passage late April 24 capped solar heating and daytime warming, consistent with real-time hourly METAR data showing no exceedance of 13°C. This observational evidence leaves negligible room for revision in the pending NWS daily climate summary, though rare instrument recalibrations or anomalous late reports could theoretically prompt review—scenarios precluded by uniform station logs and sunset timing.
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 25?
Highest temperature in Chicago on April 25?
54-55°F 100.0%
43°F or below <1%
44-45°F <1%
46-47°F <1%
$135,742 Vol.
$135,742 Vol.
Apr 25, 2026
43°F or below
No
44-45°F
No
46-47°F
No
48-49°F
No
50-51°F
No
52-53°F
No
54-55°F
Yes
56-57°F
No
58-59°F
No
60-61°F
No
62°F or higher
No
54-55°F 100.0%
43°F or below <1%
44-45°F <1%
46-47°F <1%
$135,742 Vol.
$135,742 Vol.
Apr 25, 2026
43°F or below
$23,324 Vol.
No
44-45°F
$447 Vol.
No
46-47°F
$592 Vol.
No
48-49°F
$6,943 Vol.
No
50-51°F
$10,032 Vol.
No
52-53°F
$16,970 Vol.
No
54-55°F
$23,618 Vol.
Yes
56-57°F
$12,737 Vol.
No
58-59°F
$14,260 Vol.
No
60-61°F
$10,980 Vol.
No
62°F or higher
$15,839 Vol.
No
This market will resolve to the temperature range that contains the highest temperature recorded at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 25 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 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.National Weather Service observations from Chicago O'Hare International Airport (KORD), the official station for such metrics, confirm the April 25 high temperature peaked at 55°F around midday, solidifying trader consensus at 100% implied probability for 54-55°F. Persistent overcast conditions and northwest winds of 10-15 mph in the wake of a cold frontal passage late April 24 capped solar heating and daytime warming, consistent with real-time hourly METAR data showing no exceedance of 13°C. This observational evidence leaves negligible room for revision in the pending NWS daily climate summary, though rare instrument recalibrations or anomalous late reports could theoretically prompt review—scenarios precluded by uniform station logs and sunset timing.
This market will resolve to the temperature range that contains the highest temperature recorded at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 25 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 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.
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 23, 2026, 12:07 AM ET
Volume
$135,742End Date
Apr 25, 2026Market Opened
Apr 23, 2026, 12:07 AM ETResolution Source
https://www.wunderground.com/history/daily/us/il/chicago/KORDResolver
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 Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 25 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 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.National Weather Service observations from Chicago O'Hare International Airport (KORD), the official station for such metrics, confirm the April 25 high temperature peaked at 55°F around midday, solidifying trader consensus at 100% implied probability for 54-55°F. Persistent overcast conditions and northwest winds of 10-15 mph in the wake of a cold frontal passage late April 24 capped solar heating and daytime warming, consistent with real-time hourly METAR data showing no exceedance of 13°C. This observational evidence leaves negligible room for revision in the pending NWS daily climate summary, though rare instrument recalibrations or anomalous late reports could theoretically prompt review—scenarios precluded by uniform station logs and sunset timing.
This market will resolve to the temperature range that contains the highest temperature recorded at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 25 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 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.
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.
Volume
$135,742End Date
Apr 25, 2026Market Opened
Apr 23, 2026, 12:07 AM ETResolution Source
https://www.wunderground.com/history/daily/us/il/chicago/KORDResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
National Weather Service observations from Chicago O'Hare International Airport (KORD), the official station for such metrics, confirm the April 25 high temperature peaked at 55°F around midday, solidifying trader consensus at 100% implied probability for 54-55°F. Persistent overcast conditions and northwest winds of 10-15 mph in the wake of a cold frontal passage late April 24 capped solar heating and daytime warming, consistent with real-time hourly METAR data showing no exceedance of 13°C. This observational evidence leaves negligible room for revision in the pending NWS daily climate summary, though rare instrument recalibrations or anomalous late reports could theoretically prompt review—scenarios precluded by uniform station logs and sunset timing.
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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