Chicago weather prediction market contracts on Kalshi and Polymarket. Celsi compares Chicago contract prices against GFS and ECMWF forecast model consensus to calculate edge scores for temperature, precipitation, snowfall, and wind speed contracts. View live mispricing signals, model verification data, and historical forecast accuracy for Chicago.
Chicago
KMDW · Chicago MidwaySettlement station: Chicago Midway, IL (KMDW)
Station Details
ICAO CodeKMDW
Elevation620 ft
Coordinates41.7868°N, 87.7522°W
Settlement SourceNWS Daily Climate Report
Microclimate Notes
SW suburbs ~10mi inland from Lake Michigan — minimal lake effect, urban heat island, reads warmer than lakefront in summer
Nearby Comparison Stations (5)
KPWK
Chicago Executive (Palwaukee)
12misuburban647ft
KLOT
Lewis-Lockport
14miinland673ft
KORD
O'Hare Airport
15misuburban672ft
KGYY
Gary Airport
22milakefront591ft
KDPA
DuPage Airport
20miinland759ft
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