Chicago weather forecast API
Chicago weather forecast API: live temperature nowcast and daily high forecast for Chicago Midway (KMDW), with calibrated probability the temperature ends above/below any Fahrenheit strike. KMDW is the official settlement station for Kalshi KXHIGHCHI and Polymarket Chicago daily high temperature prediction markets. Built for AI agents trading weather prediction markets or needing real-time weather data. $0.05 with live 3h thermal-memory telemetry (out-of-sample nowcast RMSE 0.94F); $0.01 degraded fallback (RMSE 1.21F). Free catalog: https://runwayoracle.com/catalog.json. Model-conditional estimates; not financial advice.
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://runwayoracle.com/v1/oracle/v3/mdw-edge
| Category | Everything else |
|---|---|
| Provider host | runwayoracle.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 1 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.05 | 769 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"strikeF": 75
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"strikeF": {
"description": "Optional strike temperature in degrees F (-80..140); response then includes calibrated P(above)/P(below).",
"type": "number"
}
},
"required": [],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}