TOTAL VOLUME:

$134.2b

24H VOL:

$126,324,530

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,434,646,834

406,019

Markets across

30,401

events

MATCHED EVENTS:

2,689

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Highest temperature in Boston on Aug 15, 2026?
kalshi

Highest temperature in Boston on Aug 15, 2026?

Volume:
$26,358

77° or below

 - Kalshi

77° or below - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Aug 16, 2026

Closed: Aug 16, 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

77° or below

View
100%
33%
Yes 100¢No 0¢
100¢
N/A
$11,875
N/A
N/A
$6,446
Settled
Yes
kalshi

78° to 79°

0%
27%
Yes 0¢No 100¢
100¢
N/A
$6,254
N/A
N/A
$4,293
Settled
No
kalshi

80° to 81°

0%
6%
Yes 0¢No 100¢
100¢
N/A
$4,897
N/A
N/A
$2,856
Settled
No
kalshi

82° to 83°

0%
2%
Yes 0¢No 100¢
100¢
N/A
$1,626
N/A
N/A
$1,055
Settled
No
kalshi

84° to 85°

0%
Yes 0¢No 100¢
100¢
N/A
$977
N/A
N/A
$938
Settled
No
kalshi

86° or above

0%
Yes 0¢No 100¢
100¢
N/A
$729
N/A
N/A
$719
Settled
No
Total markets: 6

Description

This event tracks the highest temperature reached in Boston on a specific date in the future. It uses a single authoritative weather data source to determine the outcome, ensuring consistency despite variations across different weather services. Participants can speculate on whether the temperature will fall within certain ranges or exceed a specific threshold.

Kalshi

The event resolves based on the maximum temperature recorded at Boston's CLIBOS station on August 15, 2026, as reported by The Weather Company. Six distinct temperature ranges are defined, each corresponding to a different market outcome. If the recorded temperature falls within any of these specified ranges — from 77°F or below up to 86°F or above — the associated market for that range resolves to Yes. All markets are mutually exclusive and collectively exhaustive, meaning exactly one market will resolve to Yes based on the actual temperature data. The Weather Company serves as the sole, definitive source for temperature verification, and all participants must accept its reported value as final, regardless of discrepancies with other weather services. This structure ensures a clear, objective resolution process rooted in a single, trusted data provider.