TOTAL VOLUME:
$134b
24H VOL:
$103,397,351
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,410,176,180
399,592
Markets across
30,097
events
MATCHED EVENTS:
2,622
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 19, 1:00 AM EST
Kalshi
This event tracks the overnight low temperature in Boston on July 18, 2026. The outcome will be determined by the National Weather Service's official daily climatological report for Boston Logan Airport, which records the minimum temperature reached during that calendar day.
Resolution is based on the minimum temperature recorded at Boston (Logan Airport) on July 18, 2026, according to the National Weather Service's Climatological Report (Daily). The official data source is accessed via the NWS website by navigating to the Observed Weather tab and selecting Boston (Logan Airport), MA with Daily Climate Report. Temperature ranges are divided into six bands: 51°F or below, 52-53°F, 54-55°F, 56-57°F, 58-59°F, and 60°F or above. Each band corresponds to a separate outcome. Traders should note that preliminary NWS data may be subject to rounding and conversion nuances, and the final official NWS Climatological Report (Daily) is the authoritative source, not preliminary reports or third-party weather services.