{
  "service": "airq",
  "description": "Air quality for a latitude and longitude, from the best available source for that location.",
  "usage": [
    "GET /?lat=48.43&lon=-123.37",
    "GET /48.43,-123.37",
    "GET /48.43,-123.37?debug=1     -- add what each source did",
    "GET /48.43,-123.37?source=airnow -- force one source, no fall-through"
  ],
  "sources": [
    "U.S. EPA AirNow (United States, station observations, requires a key)",
    "Environment and Climate Change Canada (Canada except Quebec, station observations)",
    "Open-Meteo / CAMS (global fallback, model output)"
  ],
  "note": "Index scales are reported as published and are never converted between one another. Check index.id before comparing values.",
  "repository": "https://github.com/gshaw/airq"
}