Index onlineMerchant portal
Api Endpoint

Runway Weather Oracle

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 1.11F); $0.01 degraded fallback (RMSE 1.86F). Free catalog: https://runwayoracle.com/catalog.json. Model-conditional estimates; not financial advice.

Open interactive test console

Offering

Provider
runwayoracle.com
Method
GET
Offering type
Api Endpoint
Transport type
http
Category
Blockchain And Crypto
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://runwayoracle.com/v1/oracle/v3/mdw-edge
MIME type
application/json
First seen
2026-10-16T01:59:37.852Z
Last seen
Tags
weather, weather-forecast, weather-api, weather-data, temperature, forecast, nowcast, daily-high, probability, prediction-market, kalshi, polymarket, Trading, oracle, mdw, chicago, midway, kmdw, kxhighchi

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.01 USDC
Atomic price: 10000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0xCc42Ed39a06b6cF3f484307eF76B88Bf56Fb305f"
  }
]

Observed health

Status
Healthy
Latest latency
230 ms
Average latency
472 ms
HTTP status
402
Last checked
Reachability
100% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "strikeF": {
          "type": "number",
          "description": "Optional strike temperature in degrees F (-80..140); response then includes calibrated P(above)/P(below)."
        }
      },
      "required": []
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "json",
  "example": {
    "asOf": "2026-07-02T00:00:00.000Z",
    "meta": {
      "mode": "thermal-memory",
      "disclaimer": "Model-conditional statistical estimate; not financial advice.",
      "oosNowcastRmseF": 0.94
    },
    "strike": {
      "strikeF": 75,
      "pAbovePct": 1,
      "pBelowPct": 100
    },
    "station": "MDW",
    "projection": {
      "sigmaF": 1.242,
      "baselineF": 70.752,
      "basisSpreadF": -8.261,
      "projectedTmpF": 62.491
    }
  }
}