Persistent cloud cover, scattered showers, and a cool air mass limited daytime heating across the Chicago area on August 15, producing an official maximum of 78–79°F at O’Hare per National Weather Service observations. This outcome aligned with model consensus from the prior 48 hours and fell several degrees below the 82.8°F seasonal normal, driving trader consensus to near-certainty once preliminary reports confirmed the reading. Official climatological summaries issued the following morning provided the definitive data for market resolution. Only an unlikely post-event revision by the National Weather Service or use of a non-standard station could alter the recorded high.
Eksperimental na AI-generated summary na nire-reference ang Polymarket data. Hindi ito trading advice at wala itong papel sa kung paano nire-resolve ang market na ito. · Na-updateHighest temperature in Chicago on August 15?
78-79°F 100.0%
75°F or below <1%
76-77°F <1%
80-81°F <1%
$32,904 Vol.
$32,904 Vol.
75°F or below
No
76-77°F
No
78-79°F
Yes
80-81°F
No
82-83°F
No
84-85°F
No
86-87°F
No
88-89°F
No
90-91°F
No
92-93°F
No
94°F or higher
No
78-79°F 100.0%
75°F or below <1%
76-77°F <1%
80-81°F <1%
$32,904 Vol.
$32,904 Vol.
75°F or below
No
76-77°F
No
78-79°F
Yes
80-81°F
No
82-83°F
No
84-85°F
No
86-87°F
No
88-89°F
No
90-91°F
No
92-93°F
No
94°F or higher
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 15 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Chicago O'Hare Intl Airport Station, 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 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.
Binuksan ang Market: Aug 13, 2026, 8:56 PM ET
Resolution Source
https://www.wunderground.com/history/daily/us/il/chicago/KORDResolver
0x69c47De9D...Na-propose ang outcome: No
Walang dispute
Pinal na 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 15 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Chicago O'Hare Intl Airport Station, 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 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.
Resolution Source
https://www.wunderground.com/history/daily/us/il/chicago/KORDResolver
0x69c47De9D...Na-propose ang outcome: No
Walang dispute
Pinal na outcome: No
Persistent cloud cover, scattered showers, and a cool air mass limited daytime heating across the Chicago area on August 15, producing an official maximum of 78–79°F at O’Hare per National Weather Service observations. This outcome aligned with model consensus from the prior 48 hours and fell several degrees below the 82.8°F seasonal normal, driving trader consensus to near-certainty once preliminary reports confirmed the reading. Official climatological summaries issued the following morning provided the definitive data for market resolution. Only an unlikely post-event revision by the National Weather Service or use of a non-standard station could alter the recorded high.
Eksperimental na AI-generated summary na nire-reference ang Polymarket data. Hindi ito trading advice at wala itong papel sa kung paano nire-resolve ang market na ito. · Na-update

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