Current National Weather Service and ensemble model guidance indicates a seasonable high near 86°F for Chicago on July 21, driven by moderate high pressure, limited warm advection, and dew points in the mid-60s that constrain daytime heating close to the 84.6°F July normal. Trader consensus clusters around the 84–87°F bins because small differences in boundary-layer mixing, cloud timing, and steering flow can shift the daily maximum by a degree or two across model runs. Recent cooler readings after mid-July heat episodes have kept probabilities for 88°F+ modest while capping downside risk below 82°F absent stronger northerly flow. Updated short-range guidance tonight will likely refine these narrow ranges ahead of official resolution.
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 July 21?
84-85°F 44%
82-83°F 26%
86-87°F 19%
80-81°F 6.0%
79°F or below
2%
80-81°F
6%
82-83°F
26%
84-85°F
44%
86-87°F
19%
88-89°F
6%
90-91°F
1%
92-93°F
<1%
94-95°F
<1%
96-97°F
<1%
98°F or higher
<1%
84-85°F 44%
82-83°F 26%
86-87°F 19%
80-81°F 6.0%
79°F or below
2%
80-81°F
6%
82-83°F
26%
84-85°F
44%
86-87°F
19%
88-89°F
6%
90-91°F
1%
92-93°F
<1%
94-95°F
<1%
96-97°F
<1%
98°F or higher
<1%
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: Jul 19, 2026, 9:08 PM ET
Resolution Source
https://www.wunderground.com/history/daily/us/il/chicago/KORDResolver
0x69c47De9D...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...Current National Weather Service and ensemble model guidance indicates a seasonable high near 86°F for Chicago on July 21, driven by moderate high pressure, limited warm advection, and dew points in the mid-60s that constrain daytime heating close to the 84.6°F July normal. Trader consensus clusters around the 84–87°F bins because small differences in boundary-layer mixing, cloud timing, and steering flow can shift the daily maximum by a degree or two across model runs. Recent cooler readings after mid-July heat episodes have kept probabilities for 88°F+ modest while capping downside risk below 82°F absent stronger northerly flow. Updated short-range guidance tonight will likely refine these narrow ranges ahead of official resolution.
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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