TOTAL VOLUME:

$134.1b

24H VOL:

$133,388,117

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,436,095,462

405,232

Markets across

30,526

events

MATCHED EVENTS:

2,693

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

BETA
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Highest temperature in Chicago on Jul 27, 2026?
kalshi

Highest temperature in Chicago on Jul 27, 2026?

Volume:
$119,978

89° or below

 - Kalshi

89° or below - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Jul 28, 2026

Closed: Jul 28, 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

89° or below

View
100%
Yes 100¢No 0¢
100¢
N/A
$52,898
N/A
N/A
$26,043
Settled
Yes
kalshi

90° to 91°

0%
Yes 0¢No 100¢
100¢
N/A
$24,838
N/A
N/A
$14,978
Settled
No
kalshi

92° to 93°

0%
Yes 0¢No 100¢
100¢
N/A
$13,466
N/A
N/A
$8,127
Settled
No
kalshi

94° to 95°

0%
Yes 0¢No 100¢
100¢
N/A
$12,020
N/A
N/A
$8,996
Settled
No
kalshi

96° to 97°

0%
Yes 0¢No 100¢
100¢
N/A
$8,700
N/A
N/A
$6,489
Settled
No
kalshi

98° or above

0%
Yes 0¢No 100¢
100¢
N/A
$8,056
N/A
N/A
$5,782
Settled
No
Total markets: 6

Description

This event tracks the peak temperature in Chicago on a specific summer day in 2026, using official government data as the definitive source. Participants assess likelihoods based on historical trends, seasonal patterns, and long-range forecasts. The outcome hinges solely on the exact temperature reading reported after the event.

Kalshi

All markets resolve based exclusively on the highest temperature recorded at Chicago Midway, IL on July 27, 2026, as reported in the National Weather Service's official Climatological Report (Daily). Each market corresponds to a specific temperature range: 89° or below, 90-91°, 92-93°, 94-95°, 96-97°, or 98° and above. The market associated with the actual reported temperature range will resolve as Yes, with all others resolving as No. Traders must recognize that preliminary or third-party weather data may differ from the official NWS report due to rounding, conversion, or reporting nuances, and should rely only on the final NWS documentation for resolution.