{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/airvisual/main/json-schema/station-data.json",
  "title": "StationData",
  "description": "Air quality and weather data for a monitoring station returned by the IQAir AirVisual API.",
  "type": "object",
  "properties": {
    "status": {
      "type": "string",
      "description": "Response status",
      "example": "success"
    },
    "data": {
      "type": "object",
      "description": "Station air quality and weather payload",
      "properties": {
        "name": { "type": "string", "description": "Station name" },
        "city": { "type": "string", "description": "City name" },
        "state": { "type": "string", "description": "State name" },
        "country": { "type": "string", "description": "Country name" },
        "location": {
          "type": "object",
          "description": "GeoJSON Point location",
          "properties": {
            "type": { "type": "string", "example": "Point" },
            "coordinates": {
              "type": "array",
              "items": { "type": "number" },
              "description": "Longitude and latitude"
            }
          }
        },
        "current": {
          "type": "object",
          "description": "Current conditions",
          "properties": {
            "weather": { "$ref": "#/definitions/Weather" },
            "pollution": { "$ref": "#/definitions/Pollution" }
          }
        },
        "forecasts": {
          "type": "array",
          "description": "Forecast data points",
          "items": { "$ref": "#/definitions/Forecast" }
        },
        "history": {
          "type": "object",
          "description": "Historical data",
          "properties": {
            "weather": { "type": "array", "items": { "$ref": "#/definitions/Weather" } },
            "pollution": { "type": "array", "items": { "$ref": "#/definitions/Pollution" } }
          }
        }
      }
    }
  },
  "definitions": {
    "Weather": {
      "type": "object",
      "properties": {
        "ts": { "type": "string", "format": "date-time" },
        "tp": { "type": "number", "description": "Temperature in Celsius" },
        "pr": { "type": "number", "description": "Atmospheric pressure in hPa" },
        "hu": { "type": "number", "description": "Humidity percentage" },
        "ws": { "type": "number", "description": "Wind speed in m/s" },
        "wd": { "type": "number", "description": "Wind direction as angle" },
        "ic": { "type": "string", "description": "Weather icon code" }
      }
    },
    "Pollution": {
      "type": "object",
      "properties": {
        "ts": { "type": "string", "format": "date-time" },
        "aqius": { "type": "integer", "description": "AQI based on US EPA standard" },
        "mainus": { "type": "string", "description": "Main pollutant for US AQI" },
        "aqicn": { "type": "integer", "description": "AQI based on China MEP standard" },
        "maincn": { "type": "string", "description": "Main pollutant for Chinese AQI" },
        "p2": { "$ref": "#/definitions/PollutantUnit" },
        "p1": { "$ref": "#/definitions/PollutantUnit" },
        "o3": { "$ref": "#/definitions/PollutantUnit" },
        "n2": { "$ref": "#/definitions/PollutantUnit" },
        "s2": { "$ref": "#/definitions/PollutantUnit" },
        "co": { "$ref": "#/definitions/PollutantUnit" }
      }
    },
    "PollutantUnit": {
      "type": "object",
      "properties": {
        "conc": { "type": "number" },
        "aqius": { "type": "integer" },
        "aqicn": { "type": "integer" }
      }
    },
    "Forecast": {
      "type": "object",
      "properties": {
        "ts": { "type": "string", "format": "date-time" },
        "aqius": { "type": "integer" },
        "aqicn": { "type": "integer" },
        "tp": { "type": "number" },
        "tp_min": { "type": "number" },
        "pr": { "type": "number" },
        "hu": { "type": "number" },
        "ws": { "type": "number" },
        "wd": { "type": "number" },
        "ic": { "type": "string" }
      }
    }
  }
}