TOTAL VOLUME:

$134.2b

24H VOL:

$134,145,987

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,441,166,947

406,422

Markets across

30,383

events

MATCHED EVENTS:

2,688

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Highest temperature in Boston on Jul 18, 2026?
kalshi

Highest temperature in Boston on Jul 18, 2026?

Volume:
$21,952

82° to 83°

 - Kalshi

82° to 83° - Kalshi

1W

News

Positive

Negative

Neutral

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Vol.

·

Resolved Jul 19, 2026

Closed: Jul 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

82° to 83°

View
100%
Yes 100¢No 0¢
100¢
N/A
$5,569
N/A
N/A
$3,996
Settled
Yes
kalshi

84° to 85°

0%
Yes 0¢No 100¢
100¢
N/A
$5,374
N/A
N/A
$2,636
Settled
No
kalshi

86° to 87°

0%
Yes 0¢No 100¢
100¢
N/A
$3,807
N/A
N/A
$1,814
Settled
No
kalshi

88° or above

0%
Yes 0¢No 100¢
100¢
N/A
$3,470
N/A
N/A
$2,839
Settled
No
kalshi

80° to 81°

0%
Yes 0¢No 100¢
100¢
N/A
$1,877
N/A
N/A
$1,363
Settled
No
kalshi

79° or below

0%
Yes 0¢No 100¢
100¢
N/A
$1,855
N/A
N/A
$1,206
Settled
No
Total markets: 6

Description

This market tracks the highest temperature recorded in Boston on July 18, 2026. The outcome will be determined by the official National Weather Service Climatological Report (Daily) for Boston Logan Airport, which provides the authoritative temperature measurement for the region.

Kalshi

Resolution is based on the maximum temperature recorded at Boston on July 18, 2026, according to the National Weather Service's Climatological Report (Daily) for Boston (Logan Airport), MA. The official data source is accessed via the NWS website under the "Observed Weather" tab. Temperature ranges are divided into six outcomes: 79°F or below, 80-81°F, 82-83°F, 84-85°F, 86-87°F, and 88°F or above. Traders should note that preliminary NWS data may be subject to rounding and conversion nuances, and the final official report should be used for resolution rather than preliminary estimates or third-party weather services.