# Aviation Weather

Airport weather decoded into flight categories, forecast deterioration, crosswind, density altitude and SIGMET hazards.

## How to pay

Machine-payable over x402. USDC on: Base (eip155:8453), Solana (solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp), Polygon (eip155:137), Arbitrum One (eip155:42161).
No accounts. No API keys. No signup. The paying wallet is the account.

## Machine-readable

- OpenAPI: https://aviation-weather.x402tookit.com/openapi.json
- x402 manifest: https://aviation-weather.x402tookit.com/.well-known/x402
- Catalog (free): https://aviation-weather.x402tookit.com/catalog
- Health (free): https://aviation-weather.x402tookit.com/health
- Uptime (free): https://aviation-weather.x402tookit.com/uptime

## Endpoints (8)

### GET /airport-conditions — $0.03
Airport weather now and ahead in one call: current flight category, worst forecast category, wind and trend.
Params: icao: string, hours?: integer
Example: https://aviation-weather.x402tookit.com/airport-conditions?icao=KORD&hours=6

### GET /crosswind — $0.02
Live crosswind and headwind components at an airport for a runway heading, including gusts, versus your limit.
Params: icao: string, heading: integer, limit_kt?: integer
Example: https://aviation-weather.x402tookit.com/crosswind?icao=KJFK&heading=130&limit_kt=15

### GET /density-altitude — $0.02
Density altitude at an airport from live temperature and pressure: performance penalty for aircraft and drones.
Params: icao: string
Example: https://aviation-weather.x402tookit.com/density-altitude?icao=KDEN

### GET /fog-risk — $0.02
Fog and low-visibility risk at an airport from the temperature-dew point spread, wind and visibility.
Params: icao: string
Example: https://aviation-weather.x402tookit.com/fog-risk?icao=KSFO

### GET /metar-multi — $0.02
Current weather at up to 10 airports at once: flight category, wind and ceiling for each, worst first.
Params: icaos: string
Example: https://aviation-weather.x402tookit.com/metar-multi?icaos=KJFK%2CKORD%2CKDEN%2CKSFO

### GET /metar — $0.02
Latest airport weather by ICAO code, decoded: flight category VFR/MVFR/IFR/LIFR, wind, visibility, ceiling, temperature.
Params: icao: string
Example: https://aviation-weather.x402tookit.com/metar?icao=KJFK

### GET /sigmets — $0.02
Active US SIGMETs and AIRMETs by hazard: convective, turbulence, icing, volcanic ash, with altitudes and validity.
Params: hazard?: string
Example: https://aviation-weather.x402tookit.com/sigmets?hazard=CONVECTIVE

### GET /taf — $0.02
Airport forecast (TAF) summarized: worst flight category in the next 6-24 hours, when it starts, and the periods.
Params: icao: string, hours?: integer
Example: https://aviation-weather.x402tookit.com/taf?icao=KJFK&hours=24

## Terms

Weather information decoded from the US National Weather Service Aviation Weather Center public data, provided as is, with no warranty. This is NOT an official flight briefing and must not be used as the sole source for flight planning or any safety decision. Observations age quickly; always check the report time. Not affiliated with NOAA, the FAA or any aviation authority.