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daily prop · Chicago, IL · Great Lakes & Upper Midwest · settles Wed Oct 21

Chicago runs hot-for-here: 74°F+ · Wed Oct 21

7¢
american +1291 · decimal 13.91
on the tape
74°F is the top-decile high for this date at this station (1940–present). Hot means hot *for here*.
Canonical settlement condition: High ≥ 74°F. The original listing above is retained as published. Open the model matchup dashboard →

The Tape

what the models knew, when
0¢25¢50¢75¢100¢10/0610/1610/19 06:00
— — reconstructed from archived model runs (deterministic values + a lead-dependent Gaussian error model, labeled, never on the tape) · — live prices from the running consensus engine.

Who's Bullish

each model's own price
aifs
36¢
wn2
28¢
ndfd
23¢
hres
8¢
icon
6¢
nbm
6¢
eps
3¢

The Ladder

where the whole distribution sits
64–65°F1¢
66–67°F11¢
68–69°F38¢
70–71°F38¢
72–73°F11¢
74–75°F1¢
calibration receipt: lead 2, scored on 14,410 settled station-days, consensus CRPS 1.692 vs climatology 8.861.

Receipts

prop id WP-KORD-20261021-TMAX-GE74 · opened 2026-10-14T10:32:59+00:00 · minted to the append-only hash-chained tape at open; the settle writes next to the mint · inspect the tape