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, 1:59 AM EST
Kalshi
This event predicts the highest temperature at Chicago Midway on July 18, 2026. The outcome will be determined by the National Weather Service's official Climatological Report (Daily) for that date.
Resolution is based on the highest temperature recorded at Chicago Midway, Illinois on July 18, 2026, as reported in the National Weather Service's Climatological Report (Daily). The temperature reading determines which outcome resolves affirmatively: 88° or below, 89–90°, 91–92°, 93–94°, 95–96°, or 97° or above. The NWS Climatological Report (Daily) serves as the sole authoritative source; preliminary NWS data and alternative weather services are not used for final determination. Traders should be aware that preliminary NWS reporting and measurement methods may involve rounding and conversion nuances that could affect interpretation of borderline readings.