TOTAL VOLUME:

$134.2b

24H VOL:

$130,522,377

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,438,389,636

404,028

Markets across

30,214

events

MATCHED EVENTS:

2,681

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Highest temperature in Chicago on Aug 20, 2026?
kalshi

Highest temperature in Chicago on Aug 20, 2026?

Volume:
$62,989

77° to 78°

 - Kalshi

77° to 78° - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Aug 21, 2026

Closed: Aug 21, 2:00 AM EST

kalshi

Kalshi

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

77° to 78°

View
100%
81%
Yes 100¢No 0¢
100¢
N/A
$24,510
N/A
N/A
$9,583
Settled
Yes
kalshi

79° to 80°

0%
64%
Yes 0¢No 100¢
100¢
N/A
$15,261
N/A
N/A
$7,609
Settled
No
kalshi

81° to 82°

0%
12%
Yes 0¢No 100¢
100¢
N/A
$11,355
N/A
N/A
$7,657
Settled
No
kalshi

76° or below

0%
1%
Yes 0¢No 100¢
100¢
N/A
$8,375
N/A
N/A
$7,723
Settled
No
kalshi

85° or above

0%
1%
Yes 0¢No 100¢
100¢
N/A
$1,882
N/A
N/A
$1,679
Settled
No
kalshi

83° to 84°

0%
1%
Yes 0¢No 100¢
100¢
N/A
$1,606
N/A
N/A
$1,268
Settled
No
Total markets: 6

Description

On August 20, 2026, Chicago's weather will be monitored to see if the highest temperature reaches certain thresholds. Various temperature bands are defined, each corresponding to a different market outcome based on the peak temperature recorded that day.

Kalshi

The market resolves based on the maximum temperature recorded at Chicago (CLIMDW) on August 20, 2026, as reported by The Weather Company. Six distinct temperature ranges are specified: 76°F or below, 77-78°F, 79-80°F, 81-82°F, 83-84°F, and 85°F or above. If the recorded maximum temperature falls within any of these ranges, the corresponding market resolves to Yes. All secondary rules emphasize that while other weather sources may be consulted for guidance, The Weather Company's report is the official and final determinant of the temperature values used to resolve the markets.