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icon for Highest temperature in Chicago on August 25?

Highest temperature in Chicago on August 25?

icon for Highest temperature in Chicago on August 25?

Highest temperature in Chicago on August 25?

Aug 24

Aug 25

Aug 24

Aug 25

80-81°F 48%

78-79°F 32%

82-83°F 15%

84-85°F 6%

Polymarket
NEW

80-81°F 48%

78-79°F 32%

82-83°F 15%

84-85°F 6%

Polymarket
NEW

71°F or below

$100 Vol.

<1%

72-73°F

$15 Vol.

1%

74-75°F

$95 Vol.

<1%

76-77°F

$183 Vol.

4%

78-79°F

$90 Vol.

32%

80-81°F

$375 Vol.

48%

82-83°F

$92 Vol.

15%

84-85°F

$199 Vol.

6%

86-87°F

$90 Vol.

1%

88-89°F

$5 Vol.

1%

90°F or higher

$5 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 25 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 This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button. 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 forecasts and supporting model guidance for Chicago on August 25 project a daily high in the upper 70s to low 80s under mostly sunny to partly cloudy skies with light southerly winds. This pattern, influenced by high pressure and modest warm-air advection, positions the 80-81°F bin as the market leader at 48% implied probability, followed closely by 78-79°F. Recent model runs show limited spread, though afternoon lake-breeze development or minor cloud increases could trim the peak by 1-2°F. Historical August 25 averages near 82°F provide context, but current cooler-than-normal conditions support the consensus range ahead of the next forecast update.

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 25 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

This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.

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
$1,155
End Date
Aug 25, 2026
Market Opened
Aug 23, 2026, 8:56 PM ET

Resolution Source

https://www.weather.gov/wrh/timeseries?site=kord

Resolver

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 25 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 This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button. 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.
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 25 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 This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button. 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 forecasts and supporting model guidance for Chicago on August 25 project a daily high in the upper 70s to low 80s under mostly sunny to partly cloudy skies with light southerly winds. This pattern, influenced by high pressure and modest warm-air advection, positions the 80-81°F bin as the market leader at 48% implied probability, followed closely by 78-79°F. Recent model runs show limited spread, though afternoon lake-breeze development or minor cloud increases could trim the peak by 1-2°F. Historical August 25 averages near 82°F provide context, but current cooler-than-normal conditions support the consensus range ahead of the next forecast update.

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 25 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

This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.

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
$1,155
End Date
Aug 25, 2026
Market Opened
Aug 23, 2026, 8:56 PM ET

Resolution Source

https://www.weather.gov/wrh/timeseries?site=kord

Resolver

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 25 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 This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button. 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.

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Frequently Asked Questions

"Highest temperature in Chicago on August 25?" is a prediction market on Polymarket with 11 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "80-81°F" at 48%, followed by "78-79°F" at 32%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 48¢ implies that the market collectively assigns a 48% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

"Highest temperature in Chicago on August 25?" is a newly created market on Polymarket, launched on Aug 23, 2026. As an early market, this is your opportunity to be among the first traders to set the odds and establish the market's initial price signals. You can also bookmark this page to track volume and trading activity as the market gains traction over time.

To trade on "Highest temperature in Chicago on August 25?," browse the 11 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "Highest temperature in Chicago on August 25?" is "80-81°F" at 48%, meaning the market assigns a 48% chance to that outcome. The next closest outcome is "78-79°F" at 32%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "Highest temperature in Chicago on August 25?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.