TOTAL VOLUME:

$134.1b

24H VOL:

$113,466,932

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,423,222,590

402,751

Markets across

30,217

events

MATCHED EVENTS:

2,632

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Highest temperature in Boston on Sep 21, 2026?
kalshi

Highest temperature in Boston on Sep 21, 2026?

Volume:
$21,356

64° to 65°

 - Kalshi

64° to 65° - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 22, 2026

Closed: Sep 22, 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

64° to 65°

View
100%
58%
Yes 100¢No 0¢
100¢
N/A
$8,332
N/A
N/A
$5,193
Settled
Yes
kalshi

66° to 67°

0%
Yes 0¢No 100¢
100¢
N/A
$6,888
N/A
N/A
$3,248
Settled
No
kalshi

62° to 63°

0%
4%
Yes 0¢No 100¢
100¢
N/A
$2,653
N/A
N/A
$2,389
Settled
No
kalshi

68° to 69°

0%
7%
Yes 0¢No 100¢
100¢
N/A
$1,739
N/A
N/A
$1,191
Settled
No
kalshi

70° or above

0%
Yes 0¢No 100¢
100¢
N/A
$1,252
N/A
N/A
$1,114
Settled
No
kalshi

61° or below

0%
Yes 0¢No 100¢
100¢
N/A
$492
N/A
N/A
$481
Settled
No
Total markets: 6

Description

This event tracks the maximum temperature expected in Boston on a specific date in the future, helping participants assess climate conditions for planning or analytical purposes. The outcome depends solely on official weather data from a designated source.

Kalshi

All markets resolve based on the maximum temperature recorded at Boston's CLIBOS station on September 21, 2026, as reported by The Weather Company. Each market corresponds to a specific temperature range: 61°F or below, 62-63°F, 64-65°F, 66-67°F, 68-69°F, or 70°F and above. The Weather Company’s data is the sole authority, though participants should exercise caution with preliminary readings due to potential rounding or conversion discrepancies. If the Exchange identifies a material error in the initial data publication, it may delay resolution until a corrected version is released or until the expiration date, whichever comes first. Should no data remain available by the expiration date, markets resolve to the last fair price determined by Kalshi. The “Final” status on weather.com/kalshi is informational and does not exempt the data from potential error correction.