Official National Weather Service observations at Chicago O’Hare recorded a daily maximum of 77°F on August 23, 2026, reached at 1:13 PM CDT under mostly sunny skies with light northwest winds. This verified reading, five degrees below the 1991–2020 normal of 82°F, directly anchors the market’s 100% consensus on the 76–77°F bin. Surface analysis showed a cooler-than-average airmass with dew points in the 50s and minimal cloud cover limiting daytime heating. Because the event has concluded and NWS climatological reports are final, the outcome is effectively settled; the only realistic challenges would involve rare post-publication revisions to station data or disputes over the precise reporting site, neither of which has occurred.
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 August 23?
Highest temperature in Chicago on August 23?
76-77°F 100.0%
65°F or below <1%
66-67°F <1%
68-69°F <1%
$37,541 Vol.
$37,541 Vol.
Aug 23, 2026
65°F or below
<1%
66-67°F
<1%
68-69°F
<1%
70-71°F
<1%
72-73°F
<1%
74-75°F
<1%
76-77°F
100%
78-79°F
<1%
80-81°F
<1%
82-83°F
<1%
84°F or higher
<1%
76-77°F 100.0%
65°F or below <1%
66-67°F <1%
68-69°F <1%
$37,541 Vol.
$37,541 Vol.
Aug 23, 2026
65°F or below
$826 Vol.
<1%
66-67°F
$828 Vol.
<1%
68-69°F
$3,149 Vol.
<1%
70-71°F
$2,473 Vol.
<1%
72-73°F
$1,970 Vol.
<1%
74-75°F
$4,979 Vol.
<1%
76-77°F
$10,125 Vol.
100%
78-79°F
$5,596 Vol.
<1%
80-81°F
$4,637 Vol.
<1%
82-83°F
$1,465 Vol.
<1%
84°F or higher
$1,493 Vol.
<1%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 23 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=kord
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Official National Weather Service observations at Chicago O’Hare recorded a daily maximum of 77°F on August 23, 2026, reached at 1:13 PM CDT under mostly sunny skies with light northwest winds. This verified reading, five degrees below the 1991–2020 normal of 82°F, directly anchors the market’s 100% consensus on the 76–77°F bin. Surface analysis showed a cooler-than-average airmass with dew points in the 50s and minimal cloud cover limiting daytime heating. Because the event has concluded and NWS climatological reports are final, the outcome is effectively settled; the only realistic challenges would involve rare post-publication revisions to station data or disputes over the precise reporting site, neither of which has occurred.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 23 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=kord
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=kord
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Aug 21, 2026, 11:56 PM ET
Volume
$37,541End Date
Aug 23, 2026Market Opened
Aug 21, 2026, 11:56 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kordResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 23 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=kord
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Official National Weather Service observations at Chicago O’Hare recorded a daily maximum of 77°F on August 23, 2026, reached at 1:13 PM CDT under mostly sunny skies with light northwest winds. This verified reading, five degrees below the 1991–2020 normal of 82°F, directly anchors the market’s 100% consensus on the 76–77°F bin. Surface analysis showed a cooler-than-average airmass with dew points in the 50s and minimal cloud cover limiting daytime heating. Because the event has concluded and NWS climatological reports are final, the outcome is effectively settled; the only realistic challenges would involve rare post-publication revisions to station data or disputes over the precise reporting site, neither of which has occurred.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 23 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=kord
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=kord
To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Volume
$37,541End Date
Aug 23, 2026Market Opened
Aug 21, 2026, 11:56 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=kordResolver
0x69c47De9D...Official National Weather Service observations at Chicago O’Hare recorded a daily maximum of 77°F on August 23, 2026, reached at 1:13 PM CDT under mostly sunny skies with light northwest winds. This verified reading, five degrees below the 1991–2020 normal of 82°F, directly anchors the market’s 100% consensus on the 76–77°F bin. Surface analysis showed a cooler-than-average airmass with dew points in the 50s and minimal cloud cover limiting daytime heating. Because the event has concluded and NWS climatological reports are final, the outcome is effectively settled; the only realistic challenges would involve rare post-publication revisions to station data or disputes over the precise reporting site, neither of which has occurred.
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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