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 May 20, 2026?
kalshi

Highest temperature in Boston on May 20, 2026?

Volume:
$94,763

90° to 91°

 - Kalshi

90° to 91° - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved May 21, 2026

Closed: May 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

90° to 91°

View
100%
Yes 100¢No 0¢
100¢
N/A
$13,328
N/A
N/A
$9,641
Settled
Yes
kalshi

88° to 89°

0%
Yes 0¢No 100¢
100¢
N/A
$55,030
N/A
N/A
$50,721
Settled
No
kalshi

92° to 93°

0%
Yes 0¢No 100¢
100¢
N/A
$13,245
N/A
N/A
$8,614
Settled
No
kalshi

87° or below

0%
Yes 0¢No 100¢
100¢
N/A
$5,933
N/A
N/A
$4,151
Settled
No
kalshi

94° to 95°

0%
Yes 0¢No 100¢
100¢
N/A
$3,779
N/A
N/A
$2,591
Settled
No
kalshi

96° or above

0%
Yes 0¢No 100¢
100¢
N/A
$3,448
N/A
N/A
$2,651
Settled
No
Total markets: 6

Description

This event concerns the maximum temperature recorded in Boston on May 20, 2026, as documented by the National Weather Service. The market appears designed to capture outcomes across the full spectrum of possible temperatures for that date. Regardless of whether the temperature falls below 88°F or exceeds 95°F, the market resolves affirmatively.