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 Boston on Sep 19, 2026?
kalshi

Highest temperature in Boston on Sep 19, 2026?

Volume:
$24,881

61° to 62°

 - Kalshi

61° to 62° - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 20, 2026

Closed: Sep 20, 1:00 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

61° to 62°

View
100%
90%
Yes 100¢No 0¢
100¢
N/A
$12,073
N/A
N/A
$9,614
Settled
Yes
kalshi

63° to 64°

0%
66%
Yes 0¢No 100¢
100¢
N/A
$6,051
N/A
N/A
$3,556
Settled
No
kalshi

65° to 66°

0%
17%
Yes 0¢No 100¢
100¢
N/A
$2,372
N/A
N/A
$1,618
Settled
No
kalshi

60° or below

0%
1%
Yes 0¢No 100¢
100¢
N/A
$2,226
N/A
N/A
$2,221
Settled
No
kalshi

67° to 68°

0%
Yes 0¢No 100¢
100¢
N/A
$1,082
N/A
N/A
$866
Settled
No
kalshi

69° or above

0%
Yes 0¢No 100¢
100¢
N/A
$1,076
N/A
N/A
$1,051
Settled
No
Total markets: 6

Description

This event tracks the highest temperature recorded in Boston on a specific date in the future, using data from a designated weather provider. The outcome depends on where the temperature falls within predefined ranges, reflecting possible weather conditions for that day.

Kalshi

The event resolves based on the maximum temperature recorded at Boston's CLIBOS station on September 19, 2026, as reported by The Weather Company. Six distinct temperature ranges are defined, each corresponding to a separate market outcome. If the temperature falls within a specific range, the associated market resolves to Yes; all others resolve to No. All markets share identical secondary rules regarding data verification and error handling. Preliminary data may be subject to rounding or conversion differences, and the Exchange reserves the right to delay resolution if a material error is identified in the initial publication. If final data remains unavailable by the expiration date, markets will resolve to the last fair price determined by Kalshi. The status of 'Final' on The Weather Company's platform is informational only and does not guarantee error-free data.