Chicago Daily High · 2026-07-24
Market summary
Prices as of 17:58 UTC on Jul 23, 2026, delayed about five minutes. Source markets: Kalshi · Polymarket. Resolution follows each venue's own market terms.
Curious how long a gap like this stays open? We measured it.
Bracket alignment
brackets offset todayBoth venues' brackets on one temperature axis — each price belongs to its own venue's real bracket. Offset days show as shifted segments.
Offset day: the venues' brackets differ by 1°F — the alignment strip above shows each venue's real brackets and prices. Prices are never combined.
Polymarket closes Jul 24, 12:00 UTC · Kalshi closes Jul 25, 05:59 UTC
Settlement: Kalshi: NWS Midway (KMDW) · Poly: Wunderground O'Hare (KORD) — DIFFERENT airports
Prices delayed about five minutes. Each venue's best ask per outcome; Kalshi asks are derived from its NO bids (ask = $1 minus the bid). Kalshi volume counts contracts, Polymarket volume is in dollars. Real-time prices and the full depth ladder are available via the WebSocket stream with an API key. How the market matching API works · Real-time WebSocket API docs. Feed reference DINO-XKQZ7-9182.