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%

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Highest temperature in Boston on Aug 21, 2026?
kalshi

Highest temperature in Boston on Aug 21, 2026?

Volume:
$10,182

74° or below

 - Kalshi

74° or below - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Aug 22, 2026

Closed: Aug 22, 1:00 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

74° or below

View
100%
16%
Yes 100¢No 0¢
100¢
N/A
$3,942
N/A
N/A
$3,127
Settled
Yes
kalshi

75° to 76°

0%
15%
Yes 0¢No 100¢
100¢
N/A
$2,172
N/A
N/A
$1,648
Settled
No
kalshi

81° to 82°

0%
Yes 0¢No 100¢
100¢
N/A
$1,987
N/A
N/A
$1,643
Settled
No
kalshi

79° to 80°

0%
Yes 0¢No 100¢
100¢
N/A
$840
N/A
N/A
$666
Settled
No
kalshi

77° to 78°

0%
Yes 0¢No 100¢
100¢
N/A
$629
N/A
N/A
$551
Settled
No
kalshi

83° or above

0%
Yes 0¢No 100¢
100¢
N/A
$612
N/A
N/A
$462
Settled
No
Total markets: 6

Description

The maximum temperature in Boston on August 21, 2026 will determine outcomes across six distinct temperature ranges, each resolving based on specific thresholds measured by The Weather Company.

Kalshi

Each market resolves based on the maximum temperature recorded at Boston (CLIBOS) on August 21, 2026, as reported by The Weather Company. Markets are divided into six temperature ranges: 74° or below, 75° to 76°, 77° to 78°, 79° to 80°, 81° to 82°, and 83° or above. The secondary rule emphasizes that while other weather sources may be referenced for guidance, The Weather Company’s data is the official and final determinant for all outcomes.