TOTAL VOLUME:

$134.1b

24H VOL:

$141,541,542

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,440,096,988

406,065

Markets across

30,522

events

MATCHED EVENTS:

2,692

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Highest temperature in Chicago on Jul 31, 2026?
kalshi

Highest temperature in Chicago on Jul 31, 2026?

Volume:
$114,630

82° to 83°

 - Kalshi

82° to 83° - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Aug 1, 2026

Closed: Aug 1, 1:59 AM EST

kalshi

Kalshi

View
Join Kalshi and score $25 for your first trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
kalshi

82° to 83°

View
100%
Yes 100¢No 0¢
100¢
N/A
$25,336
N/A
N/A
$15,977
Settled
Yes
kalshi

80° to 81°

0%
Yes 0¢No 100¢
100¢
N/A
$41,252
N/A
N/A
$30,035
Settled
No
kalshi

78° to 79°

0%
Yes 0¢No 100¢
100¢
N/A
$17,194
N/A
N/A
$11,331
Settled
No
kalshi

84° to 85°

0%
Yes 0¢No 100¢
100¢
N/A
$15,364
N/A
N/A
$8,530
Settled
No
kalshi

86° or above

0%
Yes 0¢No 100¢
100¢
N/A
$9,925
N/A
N/A
$6,070
Settled
No
kalshi

77° or below

0%
Yes 0¢No 100¢
100¢
N/A
$5,558
N/A
N/A
$4,461
Settled
No
Total markets: 6

Description

This event tracks the highest temperature reached in Chicago on a specific date, using official government data as the definitive source. It helps participants assess climate conditions and potential impacts on daily life and infrastructure based on temperature thresholds.

Kalshi

The event resolves based on the highest temperature recorded at Chicago Midway, IL on July 31, 2026, as officially reported by the National Weather Service's Climatological Report (Daily). Six distinct temperature ranges are defined, each corresponding to a separate market outcome. If the recorded temperature falls within any of these specified ranges, the associated market resolves to Yes. All outcomes rely exclusively on the NWS report for final determination, with traders advised to be cautious about preliminary data due to potential rounding or conversion nuances in reporting methods. The use of alternative weather sources such as AccuWeather or Google Weather is discouraged for settlement purposes, as they may not align with the official NWS data.