TOTAL VOLUME:

$134b

24H VOL:

$87,176,691

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,391,958,194

394,660

Markets across

30,119

events

MATCHED EVENTS:

2,626

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Highest temperature in Boston on Aug 20, 2026?
kalshi

Highest temperature in Boston on Aug 20, 2026?

Volume:
$19,769

85° to 86°

 - Kalshi

85° to 86° - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Aug 21, 2026

Closed: Aug 21, 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

85° to 86°

View
100%
51%
Yes 100¢No 0¢
100¢
N/A
$3,710
N/A
N/A
$2,630
Settled
Yes
kalshi

83° to 84°

0%
21%
Yes 0¢No 100¢
100¢
N/A
$5,176
N/A
N/A
$3,191
Settled
No
kalshi

87° to 88°

0%
21%
Yes 0¢No 100¢
100¢
N/A
$4,255
N/A
N/A
$3,034
Settled
No
kalshi

81° to 82°

0%
2%
Yes 0¢No 100¢
100¢
N/A
$2,962
N/A
N/A
$2,633
Settled
No
kalshi

89° or above

0%
1%
Yes 0¢No 100¢
100¢
N/A
$2,598
N/A
N/A
$1,723
Settled
No
kalshi

80° or below

0%
1%
Yes 0¢No 100¢
100¢
N/A
$1,067
N/A
N/A
$850
Settled
No
Total markets: 6

Description

This event tracks the highest temperature reached in Boston on a specific date in the future, using data from a designated weather authority. It helps participants assess climate conditions and temperature trends for that exact day. The outcome depends solely on the official temperature recording from the chosen source.

Kalshi

The event resolves based on the maximum temperature recorded at Boston’s CLIBOS station on August 20, 2026, as reported by The Weather Company. Six distinct temperature ranges define possible outcomes: 80°F or below, 81–82°F, 83–84°F, 85–86°F, 87–88°F, and 89°F or above. Each market corresponds to one of these ranges, and the market resolving to 'Yes' is the one that encompasses the actual recorded high temperature. All secondary rules emphasize that while other weather sources may offer guidance, The Weather Company’s data is the sole authority for determining the final result.