Official National Weather Service observations from Chicago O'Hare International Airport (KORD) confirm the highest temperature on April 5, 2026, reached 53°F around 3-4 PM under fair skies and west-northwest winds gusting to 24 mph, driving trader consensus to 100% implied probability for the 52-53°F outcome. This aligns precisely with pre-event forecast ensembles from NOAA's GFS and ECMWF models, which anticipated mid-50s highs amid a cool post-frontal air mass following severe thunderstorms and tornadoes across northern Illinois on April 2. Such conditions suppressed intensification potential despite partial sunshine on Easter Sunday. Realistic challenges include rare data quality revisions shifting the peak outside this bin, though surface temperature measurements at primary stations like KORD exhibit high reliability; final NWS climate summary expected soon.
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 5?
Highest temperature in Chicago on April 5?
52-53°F 100.0%
37°F or below <1%
38-39°F <1%
40-41°F <1%
$162,109 Vol.
$162,109 Vol.
Apr 5, 2026
37°F or below
No
38-39°F
No
40-41°F
No
42-43°F
No
44-45°F
No
46-47°F
No
48-49°F
No
50-51°F
No
52-53°F
Yes
54-55°F
No
56°F or higher
No
52-53°F 100.0%
37°F or below <1%
38-39°F <1%
40-41°F <1%
$162,109 Vol.
$162,109 Vol.
Apr 5, 2026
37°F or below
$6,025 Vol.
No
38-39°F
$5,117 Vol.
No
40-41°F
$6,126 Vol.
No
42-43°F
$21,168 Vol.
No
44-45°F
$18,871 Vol.
No
46-47°F
$20,966 Vol.
No
48-49°F
$19,911 Vol.
No
50-51°F
$15,071 Vol.
No
52-53°F
$15,038 Vol.
Yes
54-55°F
$14,813 Vol.
No
56°F or higher
$19,002 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 5 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.Official National Weather Service observations from Chicago O'Hare International Airport (KORD) confirm the highest temperature on April 5, 2026, reached 53°F around 3-4 PM under fair skies and west-northwest winds gusting to 24 mph, driving trader consensus to 100% implied probability for the 52-53°F outcome. This aligns precisely with pre-event forecast ensembles from NOAA's GFS and ECMWF models, which anticipated mid-50s highs amid a cool post-frontal air mass following severe thunderstorms and tornadoes across northern Illinois on April 2. Such conditions suppressed intensification potential despite partial sunshine on Easter Sunday. Realistic challenges include rare data quality revisions shifting the peak outside this bin, though surface temperature measurements at primary stations like KORD exhibit high reliability; final NWS climate summary expected soon.
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 5 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 1, 2026, 6:02 AM ET
Volume
$162,109End Date
Apr 5, 2026Market Opened
Apr 1, 2026, 6:02 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 5 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.Official National Weather Service observations from Chicago O'Hare International Airport (KORD) confirm the highest temperature on April 5, 2026, reached 53°F around 3-4 PM under fair skies and west-northwest winds gusting to 24 mph, driving trader consensus to 100% implied probability for the 52-53°F outcome. This aligns precisely with pre-event forecast ensembles from NOAA's GFS and ECMWF models, which anticipated mid-50s highs amid a cool post-frontal air mass following severe thunderstorms and tornadoes across northern Illinois on April 2. Such conditions suppressed intensification potential despite partial sunshine on Easter Sunday. Realistic challenges include rare data quality revisions shifting the peak outside this bin, though surface temperature measurements at primary stations like KORD exhibit high reliability; final NWS climate summary expected soon.
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 5 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
$162,109End Date
Apr 5, 2026Market Opened
Apr 1, 2026, 6:02 AM ETResolution Source
https://www.wunderground.com/history/daily/us/il/chicago/KORDResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official National Weather Service observations from Chicago O'Hare International Airport (KORD) confirm the highest temperature on April 5, 2026, reached 53°F around 3-4 PM under fair skies and west-northwest winds gusting to 24 mph, driving trader consensus to 100% implied probability for the 52-53°F outcome. This aligns precisely with pre-event forecast ensembles from NOAA's GFS and ECMWF models, which anticipated mid-50s highs amid a cool post-frontal air mass following severe thunderstorms and tornadoes across northern Illinois on April 2. Such conditions suppressed intensification potential despite partial sunshine on Easter Sunday. Realistic challenges include rare data quality revisions shifting the peak outside this bin, though surface temperature measurements at primary stations like KORD exhibit high reliability; final NWS climate summary expected soon.
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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