climate prop · Chicago, IL · Great Lakes & Upper Midwest · settles 2026
Chicago logs 17+ days of 90°F this year (normal: 17)
21¢
american +372 · decimal 4.72
on the tape
16 banked through 2026-09-06; projection 16.5. Official NWS record.
The Tape
what the models knew, when
— — 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.
Receipts
prop id WP-KORD-2026-N90-ABOVE · opened 2026-09-07T14:25:59+00:00 · minted to the append-only hash-chained tape at open; the settle writes next to the mint · inspect the tape