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 Sep 20, 2026?
kalshi

Highest temperature in Chicago on Sep 20, 2026?

Volume:
$120,259

69° to 70°

 - Kalshi

69° to 70° - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 21, 2026

Closed: Sep 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

69° to 70°

View
100%
17%
Yes 100¢No 0¢
100¢
N/A
$17,724
N/A
N/A
$11,681
Settled
Yes
kalshi

68° or below

0%
1%
Yes 0¢No 100¢
100¢
N/A
$68,860
N/A
N/A
$66,953
Settled
No
kalshi

71° to 72°

0%
12%
Yes 0¢No 100¢
100¢
N/A
$22,180
N/A
N/A
$18,438
Settled
No
kalshi

73° to 74°

0%
3%
Yes 0¢No 100¢
100¢
N/A
$5,408
N/A
N/A
$3,804
Settled
No
kalshi

77° or above

0%
1%
Yes 0¢No 100¢
100¢
N/A
$3,611
N/A
N/A
$3,412
Settled
No
kalshi

75° to 76°

0%
2%
Yes 0¢No 100¢
100¢
N/A
$2,476
N/A
N/A
$2,136
Settled
No
Total markets: 6

Description

This event tracks whether Chicago will experience specific temperature ranges on September 20, 2026. Outcomes depend on the exact peak temperature recorded at a designated weather station, categorized into several narrow bands. The resolution hinges on precise meteorological data from an official source.

Kalshi

All markets resolve based on the maximum temperature recorded at Chicago's CLIMDW station on September 20, 2026, as reported by The Weather Company. Each market corresponds to a specific temperature range: 68°F or below, 69-70°F, 71-72°F, 73-74°F, 75-76°F, or above 76°F. The Weather Company serves as the sole authority for temperature data. Preliminary readings may be subject to rounding or conversion discrepancies, so users should exercise caution. If the Exchange identifies a material error in the initial data publication, it may delay expiration until a corrected version is released or until the expiration date arrives, whichever occurs first. Should no data remain available by the expiration date, markets resolve at the last fair price determined by Kalshi. The "Final" status on Weather Company platforms is informational only and does not shield against potential data revisions or errors.