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%
Closed: Jul 23, 1:59 AM EST
Kalshi
This event tracks the highest temperature recorded at Chicago Midway, Illinois on July 22, 2026. The temperature will be measured and reported by the National Weather Service's official Climatological Report (Daily), which serves as the authoritative source for resolution.
Resolution is determined by the highest temperature recorded at Chicago Midway, Illinois on July 22, 2026, as reported in the National Weather Service's Climatological Report (Daily). The temperature is divided into six distinct ranges: 68°F or below, 69–70°F, 71–72°F, 73–74°F, 75–76°F, and 77°F or above. Each range corresponds to a separate market outcome that resolves to Yes if the recorded temperature falls within that range. The NWS Climatological Report (Daily) is the official and final source for temperature determination. While preliminary NWS data and third-party weather services like AccuWeather or Google Weather may provide guidance, traders should note that preliminary reporting and measurement methods may involve rounding and conversion nuances that could affect interpretation of the data.