Official National Weather Service observations at Chicago O'Hare International Airport (KORD)—the market's authoritative station—recorded a maximum temperature of 58-59°F on May 7, driving trader consensus to a 100% implied probability for that outcome, as verified by automated surface weather observations peaking in the early afternoon under partly cloudy skies. This positioning reflects the dominance of a cool mid-level air mass from a recent Canadian front and persistent upper-level troughing over the Midwest, which suppressed highs well below the climatological May 7 normal of 67°F following May 6's even chillier 56-57°F readings amid light west-northwest winds of 5-10 mph. While resolved with strong evidentiary support from NOAA data, rare challenges could arise from post hoc measurement revisions or disputes over peak-hour sensor readings, though such adjustments are exceedingly uncommon for standard daily maxima.
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 May 7?
Highest temperature in Chicago on May 7?
58-59°F 100.0%
55°F or below <1%
56-57°F <1%
60-61°F <1%
$76,834 Vol.
$76,834 Vol.
May 7, 2026
55°F or below
No
56-57°F
No
58-59°F
Yes
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
No
74°F or higher
No
58-59°F 100.0%
55°F or below <1%
56-57°F <1%
60-61°F <1%
$76,834 Vol.
$76,834 Vol.
May 7, 2026
55°F or below
$16,877 Vol.
No
56-57°F
$6,023 Vol.
No
58-59°F
$12,881 Vol.
Yes
60-61°F
$7,348 Vol.
No
62-63°F
$9,074 Vol.
No
64-65°F
$4,863 Vol.
No
66-67°F
$5,138 Vol.
No
68-69°F
$3,732 Vol.
No
70-71°F
$4,392 Vol.
No
72-73°F
$2,907 Vol.
No
74°F or higher
$3,598 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 7 May '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 at Chicago O'Hare International Airport (KORD)—the market's authoritative station—recorded a maximum temperature of 58-59°F on May 7, driving trader consensus to a 100% implied probability for that outcome, as verified by automated surface weather observations peaking in the early afternoon under partly cloudy skies. This positioning reflects the dominance of a cool mid-level air mass from a recent Canadian front and persistent upper-level troughing over the Midwest, which suppressed highs well below the climatological May 7 normal of 67°F following May 6's even chillier 56-57°F readings amid light west-northwest winds of 5-10 mph. While resolved with strong evidentiary support from NOAA data, rare challenges could arise from post hoc measurement revisions or disputes over peak-hour sensor readings, though such adjustments are exceedingly uncommon for standard daily maxima.
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 7 May '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: May 5, 2026, 12:12 AM ET
Volume
$76,834End Date
May 7, 2026Market Opened
May 5, 2026, 12:12 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 7 May '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 at Chicago O'Hare International Airport (KORD)—the market's authoritative station—recorded a maximum temperature of 58-59°F on May 7, driving trader consensus to a 100% implied probability for that outcome, as verified by automated surface weather observations peaking in the early afternoon under partly cloudy skies. This positioning reflects the dominance of a cool mid-level air mass from a recent Canadian front and persistent upper-level troughing over the Midwest, which suppressed highs well below the climatological May 7 normal of 67°F following May 6's even chillier 56-57°F readings amid light west-northwest winds of 5-10 mph. While resolved with strong evidentiary support from NOAA data, rare challenges could arise from post hoc measurement revisions or disputes over peak-hour sensor readings, though such adjustments are exceedingly uncommon for standard daily maxima.
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 7 May '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
$76,834End Date
May 7, 2026Market Opened
May 5, 2026, 12:12 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 at Chicago O'Hare International Airport (KORD)—the market's authoritative station—recorded a maximum temperature of 58-59°F on May 7, driving trader consensus to a 100% implied probability for that outcome, as verified by automated surface weather observations peaking in the early afternoon under partly cloudy skies. This positioning reflects the dominance of a cool mid-level air mass from a recent Canadian front and persistent upper-level troughing over the Midwest, which suppressed highs well below the climatological May 7 normal of 67°F following May 6's even chillier 56-57°F readings amid light west-northwest winds of 5-10 mph. While resolved with strong evidentiary support from NOAA data, rare challenges could arise from post hoc measurement revisions or disputes over peak-hour sensor readings, though such adjustments are exceedingly uncommon for standard daily maxima.
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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