TOTAL VOLUME:

$134b

24H VOL:

$107,351,958

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,416,970,024

400,720

Markets across

30,097

events

MATCHED EVENTS:

2,633

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Lowest temperature in Boston on Aug 18, 2026?
kalshi

Lowest temperature in Boston on Aug 18, 2026?

Volume:
$11,843

66° to 67°

 - Kalshi

66° to 67° - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Aug 19, 2026

Closed: Aug 19, 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

66° to 67°

View
100%
2%
Yes 100¢No 0¢
100¢
N/A
$2,020
N/A
N/A
$1,307
Settled
Yes
kalshi

74° or above

0%
1%
Yes 0¢No 100¢
100¢
N/A
$5,217
N/A
N/A
$5,217
Settled
No
kalshi

72° to 73°

0%
Yes 0¢No 100¢
100¢
N/A
$1,629
N/A
N/A
$1,629
Settled
No
kalshi

70° to 71°

0%
Yes 0¢No 100¢
100¢
N/A
$1,140
N/A
N/A
$1,040
Settled
No
kalshi

65° or below

0%
1%
Yes 0¢No 100¢
100¢
N/A
$1,062
N/A
N/A
$300
Settled
No
kalshi

68° to 69°

0%
1%
Yes 0¢No 100¢
100¢
N/A
$775
N/A
N/A
$532
Settled
No
Total markets: 6

Description

This event monitors Boston's lowest temperature on August 18, 2026, with outcomes divided into six temperature brackets from moderately cool to noticeably hot.

Kalshi

Resolution depends on the minimum temperature recorded at Boston (CLIBOS) on August 18, 2026, according to The Weather Company. Six markets cover temperature ranges: 65°F or below, 66-67°F, 68-69°F, 70-71°F, 72-73°F, and 74°F or above. A market resolves to Yes if the minimum temperature falls within its defined range. Secondary rules clarify that The Weather Company's data is the official source, even though other services like AccuWeather or Google Weather may be used for reference.