# Global Weather Wind Chill Calculator

> Global Weather Wind Chill Calculator is a paid API for AI agents from weather-global.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-21).

Calculates NWS wind chill (feels-like temperature in cold wind) from air temperature and wind speed, returning values in both Fahrenheit and Celsius plus frostbite timing when conditions are severe.

## Facts

- Endpoint: GET https://weather-global.x402tookit.com/wind-chill?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/global-weather-wind-chill-calculator-767d649b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7Xb7E5vKoMYw2r4JH16dn

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability global-weather-wind-chill-calculator-767d649b
```

Example prompt: What's the wind chill right now if it's -5°F outside with winds at 30 mph? Use Fahrenheit and let me know if there's any frostbite risk.

## When to prefer this

Choose this endpoint when you need a precise NWS-formula wind chill calculation from known temperature and wind speed values, especially when frostbite risk assessment is needed. Prefer this over general forecast endpoints when you already have the raw temperature and wind data and need the derived feels-like metric with safety categorization. Not suited for heat-based feels-like (use the heat index endpoint instead).

## Known failure modes

- Missing required 'temp' or 'wind' query parameters returns an error
- Wind chill formula only applies below 50°F / 10°C and at wind speeds above 3 mph — values outside this range may return null or a note that wind chill is not applicable
- Invalid unit strings for 'unit' or 'windUnit' may cause errors or fall back to defaults
- Payment failure (x402) if USDC balance is insufficient

## How this service works

NWS wind chill (feels-like in cold wind) from temperature and wind speed in F and C, with frostbite timing when severe.

## Output

Returns wind chill temperature in both Fahrenheit and Celsius, wind speed in both mph and km/h, a danger category label, a human-readable summary and verdict, frostbite timing estimate when conditions are severe, and optional disclaimer or degraded-mode flag.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "temp",
      "wind"
     ],
     "properties": {
      "temp": {
       "type": "number",
       "description": "Air temperature"
      },
      "unit": {
       "type": "string",
       "description": "Temperature unit F (default) or C"
      },
      "wind": {
       "type": "number",
       "description": "Wind speed"
      },
      "windUnit": {
       "type": "string",
       "description": "mph (default), kmh or ms"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "source": {
       "type": [
        "null",
        "string"
       ]
      },
      "reasons": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "summary": {
       "type": [
        "null",
        "string"
       ]
      },
      "verdict": {
       "type": [
        "null",
        "string"
       ]
      },
      "windKmh": {
       "type": [
        "null",
        "number"
       ]
      },
      "windMph": {
       "type": [
        "null",
        "number"
       ]
      },
      "category": {
       "type": [
        "null",
        "string"
       ]
      },
      "degraded": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "frostbite": {
       "type": [
        "null",
        "string"
       ]
      },
      "disclaimer": {
       "type": [
        "null",
        "string"
       ]
      },
      "notChecked": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "windChillC": {
       "type": [
        "null",
        "number"
       ]
      },
      "windChillF": {
       "type": [
        "null",
        "number"
       ]
      },
      "temperatureC": {
       "type": 
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/global-weather-wind-chill-calculator-767d649b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from weather-global.x402tookit.com](https://www.zero.xyz/host/weather-global.x402tookit.com/llms.txt)