TOTAL VOLUME:
$134.1b
24H VOL:
$141,541,542
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,440,096,988
406,065
Markets across
30,522
events
MATCHED EVENTS:
2,692
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 21, 2:00 AM EST
Kalshi
This event tracks whether Chicago will experience specific temperature ranges on September 20, 2026. Outcomes depend on the exact peak temperature recorded at a designated weather station, categorized into several narrow bands. The resolution hinges on precise meteorological data from an official source.
All markets resolve based on the maximum temperature recorded at Chicago's CLIMDW station on September 20, 2026, as reported by The Weather Company. Each market corresponds to a specific temperature range: 68°F or below, 69-70°F, 71-72°F, 73-74°F, 75-76°F, or above 76°F. The Weather Company serves as the sole authority for temperature data. Preliminary readings may be subject to rounding or conversion discrepancies, so users should exercise caution. If the Exchange identifies a material error in the initial data publication, it may delay expiration until a corrected version is released or until the expiration date arrives, whichever occurs first. Should no data remain available by the expiration date, markets resolve at the last fair price determined by Kalshi. The "Final" status on Weather Company platforms is informational only and does not shield against potential data revisions or errors.